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/s3_srvr_1_alt.BV.c.cil.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:34:41,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:34:41,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:34:41,377 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 15:34:41,416 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:34:41,435 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:34:41,435 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:34:41,436 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:34:41,436 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:34:41,436 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:34:41,437 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:34:41,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:34:41,438 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:34:41,438 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:34:41,438 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:34:41,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:34:41,439 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:34:41,439 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:34:41,440 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:34:41,440 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:34:41,483 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:34:41,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:34:41,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:34:41,509 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:34:41,510 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:34:41,511 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl [2018-10-15 15:34:41,511 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/s3_srvr_1_alt.BV.c.cil.c_14.bpl' [2018-10-15 15:34:41,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:34:41,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 15:34:41,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:34:41,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:34:41,612 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:34:41,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... [2018-10-15 15:34:41,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... [2018-10-15 15:34:41,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... [2018-10-15 15:34:41,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... [2018-10-15 15:34:41,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... [2018-10-15 15:34:41,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... [2018-10-15 15:34:41,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... [2018-10-15 15:34:41,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:34:41,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:34:41,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:34:41,678 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:34:41,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-15 15:34:41,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:34:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:34:42,947 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:34:42,948 INFO L202 PluginConnector]: Adding new model s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:42 BoogieIcfgContainer [2018-10-15 15:34:42,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:34:42,949 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 15:34:42,949 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 15:34:42,950 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 15:34:42,954 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:42" (1/1) ... [2018-10-15 15:34:42,958 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 15:34:42,985 INFO L202 PluginConnector]: Adding new model s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:34:42 BasicIcfg [2018-10-15 15:34:42,985 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 15:34:42,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:34:42,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:34:42,992 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:34:42,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:34:41" (1/3) ... [2018-10-15 15:34:42,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603b0a63 and model type s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:42, skipping insertion in model container [2018-10-15 15:34:42,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:42" (2/3) ... [2018-10-15 15:34:42,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603b0a63 and model type s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:34:42, skipping insertion in model container [2018-10-15 15:34:42,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:34:42" (3/3) ... [2018-10-15 15:34:42,996 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_1_alt.BV.c.cil.c_14.bplleft_unchanged_by_heapseparator [2018-10-15 15:34:43,006 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:34:43,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:34:43,033 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:34:43,062 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:34:43,063 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:34:43,063 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:34:43,063 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:34:43,064 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:34:43,064 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:34:43,064 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:34:43,064 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:34:43,064 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:34:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2018-10-15 15:34:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-15 15:34:43,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:43,113 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] [2018-10-15 15:34:43,115 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:43,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:43,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1400962788, now seen corresponding path program 1 times [2018-10-15 15:34:43,183 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:43,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:43,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:43,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:43,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:43,544 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2018-10-15 15:34:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:43,709 INFO L93 Difference]: Finished difference Result 343 states and 356 transitions. [2018-10-15 15:34:43,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:43,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2018-10-15 15:34:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:43,734 INFO L225 Difference]: With dead ends: 343 [2018-10-15 15:34:43,735 INFO L226 Difference]: Without dead ends: 329 [2018-10-15 15:34:43,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-10-15 15:34:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 324. [2018-10-15 15:34:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-15 15:34:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 337 transitions. [2018-10-15 15:34:43,817 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 337 transitions. Word has length 163 [2018-10-15 15:34:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:43,821 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 337 transitions. [2018-10-15 15:34:43,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 337 transitions. [2018-10-15 15:34:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-15 15:34:43,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:43,832 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-15 15:34:43,834 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:43,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1701348283, now seen corresponding path program 1 times [2018-10-15 15:34:43,837 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:34:44,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:44,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:44,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:44,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:44,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:44,036 INFO L87 Difference]: Start difference. First operand 324 states and 337 transitions. Second operand 3 states. [2018-10-15 15:34:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:44,340 INFO L93 Difference]: Finished difference Result 341 states and 354 transitions. [2018-10-15 15:34:44,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:44,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-10-15 15:34:44,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:44,344 INFO L225 Difference]: With dead ends: 341 [2018-10-15 15:34:44,344 INFO L226 Difference]: Without dead ends: 341 [2018-10-15 15:34:44,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:44,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-10-15 15:34:44,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-10-15 15:34:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-10-15 15:34:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 354 transitions. [2018-10-15 15:34:44,365 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 354 transitions. Word has length 187 [2018-10-15 15:34:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:44,366 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 354 transitions. [2018-10-15 15:34:44,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 354 transitions. [2018-10-15 15:34:44,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-15 15:34:44,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:44,371 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-15 15:34:44,371 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:44,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash 419499936, now seen corresponding path program 1 times [2018-10-15 15:34:44,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-15 15:34:44,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:44,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:44,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:44,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:44,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:44,524 INFO L87 Difference]: Start difference. First operand 341 states and 354 transitions. Second operand 3 states. [2018-10-15 15:34:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:44,907 INFO L93 Difference]: Finished difference Result 360 states and 373 transitions. [2018-10-15 15:34:44,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:44,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-10-15 15:34:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:44,912 INFO L225 Difference]: With dead ends: 360 [2018-10-15 15:34:44,915 INFO L226 Difference]: Without dead ends: 360 [2018-10-15 15:34:44,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-10-15 15:34:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2018-10-15 15:34:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-10-15 15:34:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 373 transitions. [2018-10-15 15:34:44,952 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 373 transitions. Word has length 213 [2018-10-15 15:34:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:44,953 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 373 transitions. [2018-10-15 15:34:44,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 373 transitions. [2018-10-15 15:34:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-15 15:34:44,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:44,963 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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 15:34:44,964 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:44,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 131546417, now seen corresponding path program 1 times [2018-10-15 15:34:44,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-15 15:34:45,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:45,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:45,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:45,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:45,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:45,196 INFO L87 Difference]: Start difference. First operand 360 states and 373 transitions. Second operand 3 states. [2018-10-15 15:34:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:45,674 INFO L93 Difference]: Finished difference Result 402 states and 415 transitions. [2018-10-15 15:34:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:45,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2018-10-15 15:34:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:45,679 INFO L225 Difference]: With dead ends: 402 [2018-10-15 15:34:45,679 INFO L226 Difference]: Without dead ends: 402 [2018-10-15 15:34:45,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-10-15 15:34:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2018-10-15 15:34:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-10-15 15:34:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 415 transitions. [2018-10-15 15:34:45,694 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 415 transitions. Word has length 236 [2018-10-15 15:34:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:45,695 INFO L481 AbstractCegarLoop]: Abstraction has 402 states and 415 transitions. [2018-10-15 15:34:45,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 415 transitions. [2018-10-15 15:34:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-15 15:34:45,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:45,700 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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 15:34:45,700 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:45,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:45,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1869495631, now seen corresponding path program 1 times [2018-10-15 15:34:45,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-15 15:34:45,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:45,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:45,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:45,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:45,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:45,891 INFO L87 Difference]: Start difference. First operand 402 states and 415 transitions. Second operand 3 states. [2018-10-15 15:34:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:46,169 INFO L93 Difference]: Finished difference Result 448 states and 461 transitions. [2018-10-15 15:34:46,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:46,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2018-10-15 15:34:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:46,175 INFO L225 Difference]: With dead ends: 448 [2018-10-15 15:34:46,175 INFO L226 Difference]: Without dead ends: 448 [2018-10-15 15:34:46,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2018-10-15 15:34:46,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2018-10-15 15:34:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2018-10-15 15:34:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 461 transitions. [2018-10-15 15:34:46,187 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 461 transitions. Word has length 267 [2018-10-15 15:34:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:46,188 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 461 transitions. [2018-10-15 15:34:46,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 461 transitions. [2018-10-15 15:34:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-15 15:34:46,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:46,194 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:46,194 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:46,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:46,195 INFO L82 PathProgramCache]: Analyzing trace with hash 503362850, now seen corresponding path program 1 times [2018-10-15 15:34:46,195 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-10-15 15:34:46,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:34:46,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:34:46,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:34:46,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:34:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:46,411 INFO L87 Difference]: Start difference. First operand 448 states and 461 transitions. Second operand 3 states. [2018-10-15 15:34:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:46,858 INFO L93 Difference]: Finished difference Result 502 states and 515 transitions. [2018-10-15 15:34:46,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:34:46,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-10-15 15:34:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:46,863 INFO L225 Difference]: With dead ends: 502 [2018-10-15 15:34:46,863 INFO L226 Difference]: Without dead ends: 502 [2018-10-15 15:34:46,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:34:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-10-15 15:34:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2018-10-15 15:34:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2018-10-15 15:34:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 515 transitions. [2018-10-15 15:34:46,873 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 515 transitions. Word has length 301 [2018-10-15 15:34:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:46,873 INFO L481 AbstractCegarLoop]: Abstraction has 502 states and 515 transitions. [2018-10-15 15:34:46,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:34:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 515 transitions. [2018-10-15 15:34:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-15 15:34:46,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:34:46,877 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:34:46,877 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:34:46,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:34:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1879966865, now seen corresponding path program 1 times [2018-10-15 15:34:46,878 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:34:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:34:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 184 proven. 27 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-10-15 15:34:47,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:34:47,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-15 15:34:47,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 15:34:47,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 15:34:47,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:34:47,033 INFO L87 Difference]: Start difference. First operand 502 states and 515 transitions. Second operand 4 states. [2018-10-15 15:34:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:34:47,341 INFO L93 Difference]: Finished difference Result 700 states and 714 transitions. [2018-10-15 15:34:47,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-15 15:34:47,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2018-10-15 15:34:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:34:47,343 INFO L225 Difference]: With dead ends: 700 [2018-10-15 15:34:47,344 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:34:47,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-15 15:34:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:34:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:34:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:34:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:34:47,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 333 [2018-10-15 15:34:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:34:47,346 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:34:47,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 15:34:47,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:34:47,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:34:47,351 INFO L202 PluginConnector]: Adding new model s3_srvr_1_alt.BV.c.cil.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:34:47 BasicIcfg [2018-10-15 15:34:47,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:34:47,352 INFO L168 Benchmark]: Toolchain (without parser) took 5743.07 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 45.6 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 229.2 MB). Peak memory consumption was 274.8 MB. Max. memory is 7.1 GB. [2018-10-15 15:34:47,354 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:47,355 INFO L168 Benchmark]: Boogie Preprocessor took 62.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:47,356 INFO L168 Benchmark]: RCFGBuilder took 1271.28 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 15:34:47,357 INFO L168 Benchmark]: IcfgTransformer took 36.75 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:34:47,357 INFO L168 Benchmark]: TraceAbstraction took 4364.27 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 45.6 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 176.4 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-10-15 15:34:47,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.51 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 1271.28 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 36.75 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 4364.27 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 45.6 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 176.4 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 415]: 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, 242 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 7 OverallIterations, 7 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1795 SDtfs, 199 SDslu, 1538 SDs, 0 SdLazy, 479 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=502occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1700 NumberOfCodeBlocks, 1700 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1693 ConstructedInterpolants, 0 QuantifiedInterpolants, 551017 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 892/919 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/s3_srvr_1_alt.BV.c.cil.c_14.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_15-34-47-377.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/s3_srvr_1_alt.BV.c.cil.c_14.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-34-47-377.csv Received shutdown request...