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/alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:26:42,787 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:42,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:42,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:42,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:42,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:42,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:42,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:42,808 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:42,808 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:42,809 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:26:42,810 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:26:42,810 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:26:42,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:26:42,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:26:42,813 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:26:42,814 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:26:42,816 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:26:42,818 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:26:42,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:26:42,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:26:42,822 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:26:42,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:26:42,833 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 15:26:42,848 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:42,848 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:42,850 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:42,850 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:42,850 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:42,850 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:42,851 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:42,851 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:42,852 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:42,852 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:42,852 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:42,852 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:42,852 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:42,854 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:42,854 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:42,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:42,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:42,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:42,945 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:42,945 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:42,946 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl [2018-10-10 15:26:42,947 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl' [2018-10-10 15:26:43,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:43,055 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:43,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:43,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:43,056 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:43,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/1) ... [2018-10-10 15:26:43,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/1) ... [2018-10-10 15:26:43,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/1) ... [2018-10-10 15:26:43,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/1) ... [2018-10-10 15:26:43,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/1) ... [2018-10-10 15:26:43,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/1) ... [2018-10-10 15:26:43,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/1) ... [2018-10-10 15:26:43,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:43,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:43,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:43,156 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:43,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (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 15:26:43,238 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:43,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:44,191 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:44,192 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:44 BoogieIcfgContainer [2018-10-10 15:26:44,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:44,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:44,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:44,197 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:44,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:26:43" (1/2) ... [2018-10-10 15:26:44,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e29af7 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:44, skipping insertion in model container [2018-10-10 15:26:44,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:26:44" (2/2) ... [2018-10-10 15:26:44,200 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl [2018-10-10 15:26:44,210 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:44,220 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:44,238 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:44,270 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:44,271 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:44,271 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:44,271 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:44,272 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:44,272 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:44,272 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:44,272 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:44,272 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2018-10-10 15:26:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-10 15:26:44,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:44,314 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] [2018-10-10 15:26:44,315 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:44,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:44,322 INFO L82 PathProgramCache]: Analyzing trace with hash 561168593, now seen corresponding path program 1 times [2018-10-10 15:26:44,377 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:45,023 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 15:26:45,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:45,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:26:45,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:45,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:45,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:45,053 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 11 states. [2018-10-10 15:26:45,713 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-10 15:26:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:47,335 INFO L93 Difference]: Finished difference Result 314 states and 319 transitions. [2018-10-10 15:26:47,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-10 15:26:47,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2018-10-10 15:26:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:47,354 INFO L225 Difference]: With dead ends: 314 [2018-10-10 15:26:47,355 INFO L226 Difference]: Without dead ends: 305 [2018-10-10 15:26:47,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2018-10-10 15:26:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-10-10 15:26:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 202. [2018-10-10 15:26:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-10-10 15:26:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2018-10-10 15:26:47,415 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 63 [2018-10-10 15:26:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:47,416 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 206 transitions. [2018-10-10 15:26:47,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:47,416 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 206 transitions. [2018-10-10 15:26:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-10 15:26:47,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:47,421 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:26:47,422 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:47,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:47,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1551789551, now seen corresponding path program 1 times [2018-10-10 15:26:47,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:47,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:47,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:26:47,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:26:47,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:26:47,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:26:47,677 INFO L87 Difference]: Start difference. First operand 202 states and 206 transitions. Second operand 11 states. [2018-10-10 15:26:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:48,927 INFO L93 Difference]: Finished difference Result 395 states and 399 transitions. [2018-10-10 15:26:48,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-10 15:26:48,927 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2018-10-10 15:26:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:48,931 INFO L225 Difference]: With dead ends: 395 [2018-10-10 15:26:48,932 INFO L226 Difference]: Without dead ends: 384 [2018-10-10 15:26:48,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:26:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-10 15:26:48,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 231. [2018-10-10 15:26:48,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-10 15:26:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 236 transitions. [2018-10-10 15:26:48,952 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 236 transitions. Word has length 90 [2018-10-10 15:26:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:48,953 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 236 transitions. [2018-10-10 15:26:48,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:26:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 236 transitions. [2018-10-10 15:26:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-10 15:26:48,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:48,958 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-10 15:26:48,959 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:48,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:48,959 INFO L82 PathProgramCache]: Analyzing trace with hash 365499037, now seen corresponding path program 1 times [2018-10-10 15:26:48,960 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:49,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:49,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-10 15:26:49,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-10 15:26:49,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-10 15:26:49,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2018-10-10 15:26:49,789 INFO L87 Difference]: Start difference. First operand 231 states and 236 transitions. Second operand 27 states. [2018-10-10 15:26:50,547 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-10-10 15:26:52,763 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-10 15:26:55,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:55,807 INFO L93 Difference]: Finished difference Result 559 states and 568 transitions. [2018-10-10 15:26:55,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-10 15:26:55,808 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2018-10-10 15:26:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:55,811 INFO L225 Difference]: With dead ends: 559 [2018-10-10 15:26:55,811 INFO L226 Difference]: Without dead ends: 559 [2018-10-10 15:26:55,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=594, Invalid=4098, Unknown=0, NotChecked=0, Total=4692 [2018-10-10 15:26:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-10-10 15:26:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 274. [2018-10-10 15:26:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-10 15:26:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 280 transitions. [2018-10-10 15:26:55,840 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 280 transitions. Word has length 106 [2018-10-10 15:26:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:55,840 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 280 transitions. [2018-10-10 15:26:55,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-10 15:26:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 280 transitions. [2018-10-10 15:26:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-10 15:26:55,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:55,846 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:55,846 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:55,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash -792833185, now seen corresponding path program 1 times [2018-10-10 15:26:55,849 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-10 15:26:56,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:56,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:56,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:56,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:56,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:56,144 INFO L87 Difference]: Start difference. First operand 274 states and 280 transitions. Second operand 9 states. [2018-10-10 15:26:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:56,750 INFO L93 Difference]: Finished difference Result 381 states and 386 transitions. [2018-10-10 15:26:56,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-10 15:26:56,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2018-10-10 15:26:56,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:56,753 INFO L225 Difference]: With dead ends: 381 [2018-10-10 15:26:56,753 INFO L226 Difference]: Without dead ends: 349 [2018-10-10 15:26:56,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:26:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-10-10 15:26:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 274. [2018-10-10 15:26:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-10 15:26:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 279 transitions. [2018-10-10 15:26:56,766 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 279 transitions. Word has length 122 [2018-10-10 15:26:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:56,767 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 279 transitions. [2018-10-10 15:26:56,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 279 transitions. [2018-10-10 15:26:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-10 15:26:56,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:56,774 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:26:56,774 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:56,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:56,774 INFO L82 PathProgramCache]: Analyzing trace with hash 695081297, now seen corresponding path program 2 times [2018-10-10 15:26:56,775 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:56,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:56,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:56,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:56,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:56,963 INFO L87 Difference]: Start difference. First operand 274 states and 279 transitions. Second operand 3 states. [2018-10-10 15:26:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:56,979 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2018-10-10 15:26:56,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:56,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2018-10-10 15:26:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:56,983 INFO L225 Difference]: With dead ends: 170 [2018-10-10 15:26:56,983 INFO L226 Difference]: Without dead ends: 166 [2018-10-10 15:26:56,984 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 [2018-10-10 15:26:56,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-10 15:26:56,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-10 15:26:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-10 15:26:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2018-10-10 15:26:56,989 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 149 [2018-10-10 15:26:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:56,990 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2018-10-10 15:26:56,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2018-10-10 15:26:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-10 15:26:56,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:56,993 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:26:56,993 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:56,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:56,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1392020973, now seen corresponding path program 1 times [2018-10-10 15:26:56,995 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:57,806 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-10-10 15:26:58,032 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-10 15:26:58,467 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 16 [2018-10-10 15:27:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:00,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:00,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-10 15:27:00,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-10 15:27:00,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-10 15:27:00,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2018-10-10 15:27:00,313 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 34 states. [2018-10-10 15:27:01,371 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-10-10 15:27:02,527 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2018-10-10 15:27:02,749 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2018-10-10 15:27:03,110 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-10 15:27:03,365 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-10 15:27:05,117 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2018-10-10 15:27:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:06,816 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-10 15:27:06,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-10 15:27:06,817 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 165 [2018-10-10 15:27:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:06,819 INFO L225 Difference]: With dead ends: 213 [2018-10-10 15:27:06,820 INFO L226 Difference]: Without dead ends: 204 [2018-10-10 15:27:06,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=474, Invalid=4496, Unknown=0, NotChecked=0, Total=4970 [2018-10-10 15:27:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-10 15:27:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2018-10-10 15:27:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-10 15:27:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-10 15:27:06,826 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 165 [2018-10-10 15:27:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:06,826 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-10 15:27:06,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-10 15:27:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-10 15:27:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-10 15:27:06,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:06,829 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:06,830 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:06,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:06,830 INFO L82 PathProgramCache]: Analyzing trace with hash -798555283, now seen corresponding path program 2 times [2018-10-10 15:27:06,831 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:07,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:07,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-10 15:27:07,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-10 15:27:07,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-10 15:27:07,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-10 15:27:07,758 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 31 states. [2018-10-10 15:27:09,744 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-10-10 15:27:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:11,866 INFO L93 Difference]: Finished difference Result 168 states and 167 transitions. [2018-10-10 15:27:11,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-10 15:27:11,867 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 192 [2018-10-10 15:27:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:11,868 INFO L225 Difference]: With dead ends: 168 [2018-10-10 15:27:11,868 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:27:11,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=733, Invalid=3689, Unknown=0, NotChecked=0, Total=4422 [2018-10-10 15:27:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:27:11,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:27:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:27:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:27:11,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 192 [2018-10-10 15:27:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:11,872 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:27:11,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-10 15:27:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:27:11,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:27:11,877 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:27:11 BoogieIcfgContainer [2018-10-10 15:27:11,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:27:11,878 INFO L168 Benchmark]: Toolchain (without parser) took 28824.52 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 359.1 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -249.1 MB). Peak memory consumption was 110.0 MB. Max. memory is 7.1 GB. [2018-10-10 15:27:11,880 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 15:27:11,880 INFO L168 Benchmark]: Boogie Preprocessor took 99.28 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 15:27:11,881 INFO L168 Benchmark]: RCFGBuilder took 1036.51 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:27:11,882 INFO L168 Benchmark]: TraceAbstraction took 27684.40 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 359.1 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -291.4 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:27:11,885 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 99.28 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 1036.51 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27684.40 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 359.1 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -291.4 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 251]: 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, 148 locations, 1 error locations. SAFE Result, 27.6s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 20.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 876 SDtfs, 4744 SDslu, 9626 SDs, 0 SdLazy, 7613 SolverSat, 241 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2647 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=3, 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, 627 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 887 NumberOfCodeBlocks, 887 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 880 ConstructedInterpolants, 0 QuantifiedInterpolants, 1136618 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 106/152 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/alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-27-11-897.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_41.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-27-11-897.csv Received shutdown request...