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.BOUNDED-8.pals.c_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:33:12,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:33:12,623 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:33:12,635 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:33:12,635 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:33:12,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:33:12,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:33:12,639 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:33:12,641 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:33:12,641 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:33:12,642 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 15:33:12,665 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 15:33:12,679 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:33:12,679 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:33:12,680 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:33:12,680 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:33:12,680 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:33:12,681 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:33:12,683 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:33:12,683 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:33:12,683 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:33:12,683 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:33:12,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:33:12,685 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:33:12,685 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:33:12,686 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:33:12,686 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:33:12,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:33:12,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:33:12,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:33:12,780 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:33:12,781 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:33:12,781 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl [2018-10-15 15:33:12,782 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl' [2018-10-15 15:33:12,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:33:12,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 15:33:12,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:33:12,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:33:12,891 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:33:12,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/1) ... [2018-10-15 15:33:12,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/1) ... [2018-10-15 15:33:12,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/1) ... [2018-10-15 15:33:12,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/1) ... [2018-10-15 15:33:12,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/1) ... [2018-10-15 15:33:12,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/1) ... [2018-10-15 15:33:12,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/1) ... [2018-10-15 15:33:12,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:33:12,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:33:12,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:33:12,957 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:33:12,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (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 15:33:13,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:33:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:33:14,044 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:33:14,045 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:14 BoogieIcfgContainer [2018-10-15 15:33:14,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:33:14,046 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 15:33:14,046 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 15:33:14,047 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 15:33:14,051 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:14" (1/1) ... [2018-10-15 15:33:14,056 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 15:33:14,081 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:33:14 BasicIcfg [2018-10-15 15:33:14,081 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 15:33:14,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:33:14,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:33:14,086 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:33:14,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:33:12" (1/3) ... [2018-10-15 15:33:14,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e0c438 and model type pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:14, skipping insertion in model container [2018-10-15 15:33:14,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:14" (2/3) ... [2018-10-15 15:33:14,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e0c438 and model type pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:33:14, skipping insertion in model container [2018-10-15 15:33:14,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:33:14" (3/3) ... [2018-10-15 15:33:14,090 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bplleft_unchanged_by_heapseparator [2018-10-15 15:33:14,100 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:33:14,109 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:33:14,126 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:33:14,159 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:33:14,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:33:14,160 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:33:14,160 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:33:14,161 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:33:14,161 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:33:14,161 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:33:14,161 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:33:14,161 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:33:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-15 15:33:14,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-15 15:33:14,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:14,214 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] [2018-10-15 15:33:14,216 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:14,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash 414269478, now seen corresponding path program 1 times [2018-10-15 15:33:14,289 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:14,735 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 15:33:14,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:14,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:14,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:14,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:14,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:14,767 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-15 15:33:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:14,872 INFO L93 Difference]: Finished difference Result 285 states and 294 transitions. [2018-10-15 15:33:14,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:14,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-10-15 15:33:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:14,891 INFO L225 Difference]: With dead ends: 285 [2018-10-15 15:33:14,892 INFO L226 Difference]: Without dead ends: 285 [2018-10-15 15:33:14,894 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 15:33:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-10-15 15:33:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2018-10-15 15:33:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2018-10-15 15:33:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 292 transitions. [2018-10-15 15:33:14,960 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 292 transitions. Word has length 189 [2018-10-15 15:33:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:14,963 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 292 transitions. [2018-10-15 15:33:14,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 292 transitions. [2018-10-15 15:33:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-15 15:33:14,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:14,971 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 15:33:14,971 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:14,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:14,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1757896937, now seen corresponding path program 1 times [2018-10-15 15:33:14,976 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:15,336 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 15:33:15,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:15,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:33:15,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:33:15,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:33:15,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:33:15,340 INFO L87 Difference]: Start difference. First operand 282 states and 292 transitions. Second operand 8 states. [2018-10-15 15:33:15,703 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:33:16,063 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:33:16,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:16,290 INFO L93 Difference]: Finished difference Result 456 states and 475 transitions. [2018-10-15 15:33:16,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:33:16,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2018-10-15 15:33:16,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:16,297 INFO L225 Difference]: With dead ends: 456 [2018-10-15 15:33:16,297 INFO L226 Difference]: Without dead ends: 456 [2018-10-15 15:33:16,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:33:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2018-10-15 15:33:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 300. [2018-10-15 15:33:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-10-15 15:33:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 310 transitions. [2018-10-15 15:33:16,320 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 310 transitions. Word has length 191 [2018-10-15 15:33:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:16,324 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 310 transitions. [2018-10-15 15:33:16,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:33:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 310 transitions. [2018-10-15 15:33:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-15 15:33:16,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:16,331 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:33:16,332 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:16,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:16,332 INFO L82 PathProgramCache]: Analyzing trace with hash 928323977, now seen corresponding path program 1 times [2018-10-15 15:33:16,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:16,557 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 15:33:16,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:16,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:16,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:16,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:16,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:16,560 INFO L87 Difference]: Start difference. First operand 300 states and 310 transitions. Second operand 3 states. [2018-10-15 15:33:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:16,588 INFO L93 Difference]: Finished difference Result 434 states and 451 transitions. [2018-10-15 15:33:16,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:16,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-10-15 15:33:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:16,593 INFO L225 Difference]: With dead ends: 434 [2018-10-15 15:33:16,593 INFO L226 Difference]: Without dead ends: 434 [2018-10-15 15:33:16,593 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 15:33:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-15 15:33:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2018-10-15 15:33:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-10-15 15:33:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 449 transitions. [2018-10-15 15:33:16,627 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 449 transitions. Word has length 192 [2018-10-15 15:33:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:16,628 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 449 transitions. [2018-10-15 15:33:16,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 449 transitions. [2018-10-15 15:33:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-15 15:33:16,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:16,638 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:33:16,639 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:16,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:16,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1197323275, now seen corresponding path program 1 times [2018-10-15 15:33:16,641 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:16,824 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 15:33:16,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:16,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:16,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:16,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:16,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:16,827 INFO L87 Difference]: Start difference. First operand 432 states and 449 transitions. Second operand 3 states. [2018-10-15 15:33:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:16,868 INFO L93 Difference]: Finished difference Result 589 states and 614 transitions. [2018-10-15 15:33:16,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:16,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-10-15 15:33:16,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:16,872 INFO L225 Difference]: With dead ends: 589 [2018-10-15 15:33:16,872 INFO L226 Difference]: Without dead ends: 589 [2018-10-15 15:33:16,873 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 15:33:16,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2018-10-15 15:33:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 586. [2018-10-15 15:33:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2018-10-15 15:33:16,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 612 transitions. [2018-10-15 15:33:16,887 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 612 transitions. Word has length 194 [2018-10-15 15:33:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:16,888 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 612 transitions. [2018-10-15 15:33:16,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 612 transitions. [2018-10-15 15:33:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-15 15:33:16,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:16,893 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, 1, 1, 1] [2018-10-15 15:33:16,893 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:16,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:16,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1191639966, now seen corresponding path program 1 times [2018-10-15 15:33:16,895 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:17,210 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 15:33:17,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:17,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:17,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:17,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:17,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:17,213 INFO L87 Difference]: Start difference. First operand 586 states and 612 transitions. Second operand 3 states. [2018-10-15 15:33:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:17,260 INFO L93 Difference]: Finished difference Result 1015 states and 1061 transitions. [2018-10-15 15:33:17,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:17,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-10-15 15:33:17,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:17,268 INFO L225 Difference]: With dead ends: 1015 [2018-10-15 15:33:17,268 INFO L226 Difference]: Without dead ends: 1015 [2018-10-15 15:33:17,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2018-10-15 15:33:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 988. [2018-10-15 15:33:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-10-15 15:33:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1035 transitions. [2018-10-15 15:33:17,293 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1035 transitions. Word has length 251 [2018-10-15 15:33:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:17,293 INFO L481 AbstractCegarLoop]: Abstraction has 988 states and 1035 transitions. [2018-10-15 15:33:17,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1035 transitions. [2018-10-15 15:33:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-15 15:33:17,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:17,298 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, 1, 1, 1] [2018-10-15 15:33:17,299 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:17,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2138124453, now seen corresponding path program 1 times [2018-10-15 15:33:17,301 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-15 15:33:17,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:17,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:17,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:17,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:17,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:17,469 INFO L87 Difference]: Start difference. First operand 988 states and 1035 transitions. Second operand 3 states. [2018-10-15 15:33:17,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:17,507 INFO L93 Difference]: Finished difference Result 991 states and 1031 transitions. [2018-10-15 15:33:17,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:17,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2018-10-15 15:33:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:17,513 INFO L225 Difference]: With dead ends: 991 [2018-10-15 15:33:17,513 INFO L226 Difference]: Without dead ends: 991 [2018-10-15 15:33:17,513 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 15:33:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2018-10-15 15:33:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 988. [2018-10-15 15:33:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-10-15 15:33:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1029 transitions. [2018-10-15 15:33:17,532 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1029 transitions. Word has length 252 [2018-10-15 15:33:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:17,533 INFO L481 AbstractCegarLoop]: Abstraction has 988 states and 1029 transitions. [2018-10-15 15:33:17,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1029 transitions. [2018-10-15 15:33:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-15 15:33:17,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:17,536 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, 1, 1, 1] [2018-10-15 15:33:17,536 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:17,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:17,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1204592659, now seen corresponding path program 2 times [2018-10-15 15:33:17,539 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:17,745 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 15:33:17,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:17,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:17,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:17,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:17,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:17,746 INFO L87 Difference]: Start difference. First operand 988 states and 1029 transitions. Second operand 3 states. [2018-10-15 15:33:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:17,799 INFO L93 Difference]: Finished difference Result 1801 states and 1871 transitions. [2018-10-15 15:33:17,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:17,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2018-10-15 15:33:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:17,807 INFO L225 Difference]: With dead ends: 1801 [2018-10-15 15:33:17,807 INFO L226 Difference]: Without dead ends: 1801 [2018-10-15 15:33:17,808 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 15:33:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2018-10-15 15:33:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1750. [2018-10-15 15:33:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2018-10-15 15:33:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 1821 transitions. [2018-10-15 15:33:17,842 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 1821 transitions. Word has length 252 [2018-10-15 15:33:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:17,842 INFO L481 AbstractCegarLoop]: Abstraction has 1750 states and 1821 transitions. [2018-10-15 15:33:17,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 1821 transitions. [2018-10-15 15:33:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-15 15:33:17,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:17,845 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, 1, 1, 1] [2018-10-15 15:33:17,845 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:17,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:17,846 INFO L82 PathProgramCache]: Analyzing trace with hash 982546065, now seen corresponding path program 1 times [2018-10-15 15:33:17,847 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:18,004 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 15:33:18,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:33:18,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:33:18,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:33:18,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:33:18,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:33:18,007 INFO L87 Difference]: Start difference. First operand 1750 states and 1821 transitions. Second operand 3 states. [2018-10-15 15:33:18,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:18,098 INFO L93 Difference]: Finished difference Result 949 states and 977 transitions. [2018-10-15 15:33:18,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:33:18,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2018-10-15 15:33:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:18,103 INFO L225 Difference]: With dead ends: 949 [2018-10-15 15:33:18,104 INFO L226 Difference]: Without dead ends: 949 [2018-10-15 15:33:18,104 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 15:33:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2018-10-15 15:33:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 946. [2018-10-15 15:33:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-10-15 15:33:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 975 transitions. [2018-10-15 15:33:18,123 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 975 transitions. Word has length 253 [2018-10-15 15:33:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:18,123 INFO L481 AbstractCegarLoop]: Abstraction has 946 states and 975 transitions. [2018-10-15 15:33:18,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:33:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 975 transitions. [2018-10-15 15:33:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-15 15:33:18,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:18,126 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, 1, 1, 1] [2018-10-15 15:33:18,126 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:18,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1616790595, now seen corresponding path program 2 times [2018-10-15 15:33:18,129 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-15 15:33:18,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:33:18,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-15 15:33:18,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 15:33:18,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 15:33:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:33:18,533 INFO L87 Difference]: Start difference. First operand 946 states and 975 transitions. Second operand 4 states. [2018-10-15 15:33:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:18,699 INFO L93 Difference]: Finished difference Result 1430 states and 1467 transitions. [2018-10-15 15:33:18,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-15 15:33:18,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2018-10-15 15:33:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:18,706 INFO L225 Difference]: With dead ends: 1430 [2018-10-15 15:33:18,706 INFO L226 Difference]: Without dead ends: 1430 [2018-10-15 15:33:18,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:33:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2018-10-15 15:33:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1426. [2018-10-15 15:33:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2018-10-15 15:33:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1463 transitions. [2018-10-15 15:33:18,733 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1463 transitions. Word has length 253 [2018-10-15 15:33:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:18,734 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 1463 transitions. [2018-10-15 15:33:18,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 15:33:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1463 transitions. [2018-10-15 15:33:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-15 15:33:18,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:18,738 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-15 15:33:18,738 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:18,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:18,739 INFO L82 PathProgramCache]: Analyzing trace with hash -659388095, now seen corresponding path program 3 times [2018-10-15 15:33:18,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 27 proven. 207 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-15 15:33:19,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:33:19,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-15 15:33:19,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-15 15:33:19,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-15 15:33:19,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-15 15:33:19,289 INFO L87 Difference]: Start difference. First operand 1426 states and 1463 transitions. Second operand 5 states. [2018-10-15 15:33:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:19,433 INFO L93 Difference]: Finished difference Result 1910 states and 1955 transitions. [2018-10-15 15:33:19,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-15 15:33:19,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2018-10-15 15:33:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:19,441 INFO L225 Difference]: With dead ends: 1910 [2018-10-15 15:33:19,442 INFO L226 Difference]: Without dead ends: 1910 [2018-10-15 15:33:19,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-15 15:33:19,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2018-10-15 15:33:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1906. [2018-10-15 15:33:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2018-10-15 15:33:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 1951 transitions. [2018-10-15 15:33:19,473 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 1951 transitions. Word has length 373 [2018-10-15 15:33:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:19,474 INFO L481 AbstractCegarLoop]: Abstraction has 1906 states and 1951 transitions. [2018-10-15 15:33:19,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-15 15:33:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 1951 transitions. [2018-10-15 15:33:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-10-15 15:33:19,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:33:19,480 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:19,480 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:33:19,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:33:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1476319941, now seen corresponding path program 4 times [2018-10-15 15:33:19,482 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:33:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:33:20,057 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-15 15:33:20,284 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-15 15:33:20,804 WARN L179 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-10-15 15:33:21,260 WARN L179 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2018-10-15 15:33:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 466 proven. 136 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-10-15 15:33:21,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:33:21,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:33:21,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:33:21,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:33:21,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:33:21,997 INFO L87 Difference]: Start difference. First operand 1906 states and 1951 transitions. Second operand 10 states. [2018-10-15 15:33:23,146 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-15 15:33:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:33:23,488 INFO L93 Difference]: Finished difference Result 278 states and 277 transitions. [2018-10-15 15:33:23,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:33:23,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 493 [2018-10-15 15:33:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:33:23,489 INFO L225 Difference]: With dead ends: 278 [2018-10-15 15:33:23,489 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:33:23,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:33:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:33:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:33:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:33:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:33:23,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 493 [2018-10-15 15:33:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:33:23,492 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:33:23,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:33:23,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:33:23,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:33:23,497 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:33:23 BasicIcfg [2018-10-15 15:33:23,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:33:23,498 INFO L168 Benchmark]: Toolchain (without parser) took 10609.46 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 383.3 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -256.2 MB). Peak memory consumption was 127.1 MB. Max. memory is 7.1 GB. [2018-10-15 15:33:23,500 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:33:23,500 INFO L168 Benchmark]: Boogie Preprocessor took 65.37 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:33:23,501 INFO L168 Benchmark]: RCFGBuilder took 1089.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:33:23,501 INFO L168 Benchmark]: IcfgTransformer took 35.44 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 15:33:23,502 INFO L168 Benchmark]: TraceAbstraction took 9414.68 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 383.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -298.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2018-10-15 15:33:23,506 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 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.37 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 1089.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * IcfgTransformer took 35.44 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 9414.68 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 383.3 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -298.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 390]: 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, 216 locations, 1 error locations. SAFE Result, 9.3s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2692 SDtfs, 1644 SDslu, 4160 SDs, 0 SdLazy, 367 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1906occurred in iteration=10, 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, 11 MinimizatonAttempts, 256 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2893 NumberOfCodeBlocks, 2893 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2882 ConstructedInterpolants, 0 QuantifiedInterpolants, 5203058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 864/1232 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.BOUNDED-8.pals.c_10.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_15-33-23-518.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-33-23-518.csv Received shutdown request...