java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:18:40,427 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:18:40,430 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:18:40,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:18:40,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:18:40,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:18:40,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:18:40,455 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:18:40,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:18:40,465 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:18:40,466 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:18:40,497 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:18:40,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:18:40,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:18:40,515 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:18:40,515 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:18:40,515 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:18:40,515 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:18:40,516 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:18:40,516 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:18:40,517 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:18:40,517 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:18:40,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:18:40,518 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:18:40,518 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:18:40,519 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:18:40,519 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:18:40,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:18:40,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:18:40,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:18:40,596 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:18:40,596 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:18:40,597 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl [2018-10-10 15:18:40,597 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl' [2018-10-10 15:18:40,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:18:40,655 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:18:40,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:18:40,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:18:40,656 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:18:40,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/1) ... [2018-10-10 15:18:40,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/1) ... [2018-10-10 15:18:40,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/1) ... [2018-10-10 15:18:40,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/1) ... [2018-10-10 15:18:40,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/1) ... [2018-10-10 15:18:40,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/1) ... [2018-10-10 15:18:40,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/1) ... [2018-10-10 15:18:40,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:18:40,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:18:40,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:18:40,717 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:18:40,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (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 [2018-10-10 15:18:40,783 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:18:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:18:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:18:41,308 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:18:41,308 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:18:41 BoogieIcfgContainer [2018-10-10 15:18:41,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:18:41,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:18:41,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:18:41,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:18:41,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:18:40" (1/2) ... [2018-10-10 15:18:41,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61684fe8 and model type ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:18:41, skipping insertion in model container [2018-10-10 15:18:41,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:18:41" (2/2) ... [2018-10-10 15:18:41,317 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_true-valid-memsafety.c_11.bpl [2018-10-10 15:18:41,327 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:18:41,336 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:18:41,354 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:18:41,391 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:18:41,392 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:18:41,393 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:18:41,393 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:18:41,393 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:18:41,393 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:18:41,393 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:18:41,393 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:18:41,394 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:18:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-10-10 15:18:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-10 15:18:41,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:41,437 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] [2018-10-10 15:18:41,439 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:41,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash 520473974, now seen corresponding path program 1 times [2018-10-10 15:18:41,511 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:18:41,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:18:41,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-10 15:18:41,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-10 15:18:41,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-10 15:18:41,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-10 15:18:41,802 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 6 states. [2018-10-10 15:18:42,102 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-10 15:18:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:42,271 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-10-10 15:18:42,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:18:42,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-10-10 15:18:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:42,287 INFO L225 Difference]: With dead ends: 89 [2018-10-10 15:18:42,287 INFO L226 Difference]: Without dead ends: 89 [2018-10-10 15:18:42,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-10-10 15:18:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-10 15:18:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2018-10-10 15:18:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-10 15:18:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-10-10 15:18:42,340 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 30 [2018-10-10 15:18:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:42,340 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-10-10 15:18:42,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-10 15:18:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-10-10 15:18:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-10 15:18:42,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:42,343 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:18:42,344 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:42,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1549653001, now seen corresponding path program 1 times [2018-10-10 15:18:42,345 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:18:42,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:18:42,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-10 15:18:42,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-10 15:18:42,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-10 15:18:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:18:42,538 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 7 states. [2018-10-10 15:18:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:42,944 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-10-10 15:18:42,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-10 15:18:42,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2018-10-10 15:18:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:42,948 INFO L225 Difference]: With dead ends: 103 [2018-10-10 15:18:42,949 INFO L226 Difference]: Without dead ends: 103 [2018-10-10 15:18:42,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-10 15:18:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-10 15:18:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2018-10-10 15:18:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-10 15:18:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2018-10-10 15:18:42,962 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 56 [2018-10-10 15:18:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:42,963 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2018-10-10 15:18:42,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-10 15:18:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2018-10-10 15:18:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-10 15:18:42,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:42,967 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] [2018-10-10 15:18:42,967 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:42,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1283922749, now seen corresponding path program 1 times [2018-10-10 15:18:42,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:18:43,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:18:43,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-10 15:18:43,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 15:18:43,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 15:18:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-10 15:18:43,494 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 10 states. [2018-10-10 15:18:44,308 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:18:44,659 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-10 15:18:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:44,830 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2018-10-10 15:18:44,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-10 15:18:44,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2018-10-10 15:18:44,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:44,835 INFO L225 Difference]: With dead ends: 151 [2018-10-10 15:18:44,835 INFO L226 Difference]: Without dead ends: 151 [2018-10-10 15:18:44,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2018-10-10 15:18:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-10 15:18:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2018-10-10 15:18:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-10 15:18:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2018-10-10 15:18:44,846 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 71 [2018-10-10 15:18:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:44,847 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2018-10-10 15:18:44,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 15:18:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2018-10-10 15:18:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-10 15:18:44,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:44,849 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:18:44,849 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:44,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash -142794864, now seen corresponding path program 2 times [2018-10-10 15:18:44,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:18:45,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:18:45,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-10 15:18:45,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 15:18:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 15:18:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-10 15:18:45,058 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 8 states. [2018-10-10 15:18:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:45,259 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2018-10-10 15:18:45,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:18:45,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2018-10-10 15:18:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:45,262 INFO L225 Difference]: With dead ends: 132 [2018-10-10 15:18:45,262 INFO L226 Difference]: Without dead ends: 132 [2018-10-10 15:18:45,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:18:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-10 15:18:45,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2018-10-10 15:18:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-10 15:18:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-10 15:18:45,272 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 97 [2018-10-10 15:18:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:45,273 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-10 15:18:45,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 15:18:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-10 15:18:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-10 15:18:45,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:45,276 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:18:45,276 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:45,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:45,276 INFO L82 PathProgramCache]: Analyzing trace with hash -845371370, now seen corresponding path program 3 times [2018-10-10 15:18:45,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-10 15:18:45,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:18:45,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-10 15:18:45,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:18:45,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:18:45,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:18:45,692 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 12 states. [2018-10-10 15:18:46,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:46,232 INFO L93 Difference]: Finished difference Result 197 states and 200 transitions. [2018-10-10 15:18:46,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-10 15:18:46,233 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2018-10-10 15:18:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:46,237 INFO L225 Difference]: With dead ends: 197 [2018-10-10 15:18:46,238 INFO L226 Difference]: Without dead ends: 197 [2018-10-10 15:18:46,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:18:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-10 15:18:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 128. [2018-10-10 15:18:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-10 15:18:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2018-10-10 15:18:46,250 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 112 [2018-10-10 15:18:46,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:46,250 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2018-10-10 15:18:46,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:18:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2018-10-10 15:18:46,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-10 15:18:46,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:46,253 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:18:46,254 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:46,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:46,254 INFO L82 PathProgramCache]: Analyzing trace with hash 513791254, now seen corresponding path program 4 times [2018-10-10 15:18:46,255 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 5 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-10 15:18:46,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:18:46,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-10 15:18:46,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-10 15:18:46,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-10 15:18:46,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:18:46,524 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand 14 states. [2018-10-10 15:18:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:47,934 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2018-10-10 15:18:47,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-10 15:18:47,934 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2018-10-10 15:18:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:47,936 INFO L225 Difference]: With dead ends: 222 [2018-10-10 15:18:47,936 INFO L226 Difference]: Without dead ends: 222 [2018-10-10 15:18:47,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2018-10-10 15:18:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-10 15:18:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 184. [2018-10-10 15:18:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-10 15:18:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 189 transitions. [2018-10-10 15:18:47,948 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 189 transitions. Word has length 127 [2018-10-10 15:18:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:47,948 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 189 transitions. [2018-10-10 15:18:47,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-10 15:18:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 189 transitions. [2018-10-10 15:18:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-10 15:18:47,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:47,952 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-10 15:18:47,952 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:47,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:47,952 INFO L82 PathProgramCache]: Analyzing trace with hash 753537129, now seen corresponding path program 5 times [2018-10-10 15:18:47,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 104 proven. 47 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-10 15:18:48,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:18:48,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-10 15:18:48,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 15:18:48,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 15:18:48,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-10 15:18:48,286 INFO L87 Difference]: Start difference. First operand 184 states and 189 transitions. Second operand 10 states. [2018-10-10 15:18:48,657 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:18:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:48,724 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2018-10-10 15:18:48,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 15:18:48,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 153 [2018-10-10 15:18:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:48,726 INFO L225 Difference]: With dead ends: 184 [2018-10-10 15:18:48,726 INFO L226 Difference]: Without dead ends: 184 [2018-10-10 15:18:48,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-10 15:18:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-10 15:18:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-10 15:18:48,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-10 15:18:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2018-10-10 15:18:48,735 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 153 [2018-10-10 15:18:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:48,736 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2018-10-10 15:18:48,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 15:18:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2018-10-10 15:18:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-10 15:18:48,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:48,739 INFO L375 BasicCegarLoop]: trace histogram [5, 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, 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] [2018-10-10 15:18:48,739 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:48,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:48,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1704821609, now seen corresponding path program 6 times [2018-10-10 15:18:48,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 136 proven. 65 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-10 15:18:48,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:18:48,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-10 15:18:48,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-10 15:18:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-10 15:18:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-10 15:18:48,946 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand 12 states. [2018-10-10 15:18:49,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:49,384 INFO L93 Difference]: Finished difference Result 184 states and 185 transitions. [2018-10-10 15:18:49,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-10 15:18:49,388 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2018-10-10 15:18:49,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:49,389 INFO L225 Difference]: With dead ends: 184 [2018-10-10 15:18:49,389 INFO L226 Difference]: Without dead ends: 184 [2018-10-10 15:18:49,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2018-10-10 15:18:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-10 15:18:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-10 15:18:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-10 15:18:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2018-10-10 15:18:49,396 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 168 [2018-10-10 15:18:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:49,396 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2018-10-10 15:18:49,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-10 15:18:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2018-10-10 15:18:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-10 15:18:49,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:18:49,399 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-10 15:18:49,399 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:18:49,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:18:49,400 INFO L82 PathProgramCache]: Analyzing trace with hash -684347287, now seen corresponding path program 7 times [2018-10-10 15:18:49,401 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:18:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:18:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 131 proven. 17 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-10 15:18:49,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:18:49,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:18:49,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:18:49,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:18:49,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:18:49,673 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 11 states. [2018-10-10 15:18:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:18:50,166 INFO L93 Difference]: Finished difference Result 194 states and 195 transitions. [2018-10-10 15:18:50,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-10 15:18:50,166 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 183 [2018-10-10 15:18:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:18:50,167 INFO L225 Difference]: With dead ends: 194 [2018-10-10 15:18:50,168 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:18:50,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2018-10-10 15:18:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:18:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:18:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:18:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:18:50,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2018-10-10 15:18:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:18:50,171 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:18:50,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:18:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:18:50,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:18:50,176 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:18:50 BoogieIcfgContainer [2018-10-10 15:18:50,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:18:50,178 INFO L168 Benchmark]: Toolchain (without parser) took 9523.80 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 69.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 214.0 MB). Peak memory consumption was 283.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:18:50,179 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:18:50,180 INFO L168 Benchmark]: Boogie Preprocessor took 58.12 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. [2018-10-10 15:18:50,180 INFO L168 Benchmark]: RCFGBuilder took 594.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-10 15:18:50,181 INFO L168 Benchmark]: TraceAbstraction took 8867.08 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 69.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.8 MB). Peak memory consumption was 262.6 MB. Max. memory is 7.1 GB. [2018-10-10 15:18:50,185 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.12 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 594.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8867.08 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 69.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.8 MB). Peak memory consumption was 262.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 129]: 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, 61 locations, 1 error locations. SAFE Result, 8.7s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 5.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 729 SDtfs, 2332 SDslu, 3637 SDs, 0 SdLazy, 1320 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 214 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 997 NumberOfCodeBlocks, 997 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 988 ConstructedInterpolants, 0 QuantifiedInterpolants, 322144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 612/931 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/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-18-50-195.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-18-50-195.csv Received shutdown request...