java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/matrix.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:32:30,920 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:32:30,923 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:32:30,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:32:30,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:32:30,938 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:32:30,939 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:32:30,941 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:32:30,943 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:32:30,944 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:32:30,945 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-15 15:32:30,945 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-15 15:32:30,946 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-15 15:32:30,947 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-15 15:32:30,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-15 15:32:30,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-15 15:32:30,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-15 15:32:30,952 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-15 15:32:30,955 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-15 15:32:30,961 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-15 15:32:30,962 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-15 15:32:30,967 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-15 15:32:30,969 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-15 15:32:30,972 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-15 15:32:30,972 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-15 15:32:30,973 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-15 15:32:30,976 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-15 15:32:30,976 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-15 15:32:30,980 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-15 15:32:30,982 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-15 15:32:30,983 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-15 15:32:30,984 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-15 15:32:30,990 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:32:31,005 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:32:31,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:32:31,007 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:32:31,007 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:32:31,007 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:32:31,007 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:32:31,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:32:31,009 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:32:31,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:32:31,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:32:31,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:32:31,009 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:32:31,010 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:32:31,011 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:32:31,012 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:32:31,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:32:31,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:32:31,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:32:31,104 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:32:31,105 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:32:31,106 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/matrix.i_4.bpl [2018-10-15 15:32:31,106 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/matrix.i_4.bpl' [2018-10-15 15:32:31,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:32:31,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 15:32:31,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:32:31,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:32:31,166 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:32:31,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:32:31,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:32:31,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:32:31,222 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:32:31,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-15 15:32:31,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:32:31,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:32:31,804 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:32:31,805 INFO L202 PluginConnector]: Adding new model matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:32:31 BoogieIcfgContainer [2018-10-15 15:32:31,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:32:31,805 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 15:32:31,806 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 15:32:31,807 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 15:32:31,811 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:32:31" (1/1) ... [2018-10-15 15:32:31,816 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 15:32:31,835 INFO L202 PluginConnector]: Adding new model matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:32:31 BasicIcfg [2018-10-15 15:32:31,835 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 15:32:31,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:32:31,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:32:31,839 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:32:31,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:32:31" (1/3) ... [2018-10-15 15:32:31,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662155c4 and model type matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:32:31, skipping insertion in model container [2018-10-15 15:32:31,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:32:31" (2/3) ... [2018-10-15 15:32:31,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662155c4 and model type matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:32:31, skipping insertion in model container [2018-10-15 15:32:31,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:32:31" (3/3) ... [2018-10-15 15:32:31,843 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix.i_4.bplleft_unchanged_by_heapseparator [2018-10-15 15:32:31,854 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:32:31,863 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:32:31,881 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:32:31,909 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:32:31,910 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:32:31,910 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:32:31,910 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:32:31,910 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:32:31,911 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:32:31,911 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:32:31,911 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:32:31,911 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:32:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-10-15 15:32:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-15 15:32:31,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:32:31,935 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] [2018-10-15 15:32:31,936 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:32:31,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:32:31,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1896673168, now seen corresponding path program 1 times [2018-10-15 15:32:32,004 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:32:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:32:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:32:32,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:32:32,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-15 15:32:32,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 15:32:32,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 15:32:32,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:32:32,218 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2018-10-15 15:32:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:32:32,342 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-10-15 15:32:32,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-15 15:32:32,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-15 15:32:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:32:32,357 INFO L225 Difference]: With dead ends: 50 [2018-10-15 15:32:32,357 INFO L226 Difference]: Without dead ends: 50 [2018-10-15 15:32:32,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:32:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-15 15:32:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2018-10-15 15:32:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-15 15:32:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-10-15 15:32:32,400 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 20 [2018-10-15 15:32:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:32:32,401 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-10-15 15:32:32,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 15:32:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-10-15 15:32:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-15 15:32:32,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:32:32,402 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] [2018-10-15 15:32:32,403 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:32:32,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:32:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1805282949, now seen corresponding path program 1 times [2018-10-15 15:32:32,404 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:32:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:32:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:32:32,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:32:32,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-15 15:32:32,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 15:32:32,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 15:32:32,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:32:32,536 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 4 states. [2018-10-15 15:32:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:32:32,640 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-10-15 15:32:32,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-15 15:32:32,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-15 15:32:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:32:32,642 INFO L225 Difference]: With dead ends: 46 [2018-10-15 15:32:32,642 INFO L226 Difference]: Without dead ends: 46 [2018-10-15 15:32:32,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:32:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-15 15:32:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2018-10-15 15:32:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-15 15:32:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-10-15 15:32:32,650 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 28 [2018-10-15 15:32:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:32:32,650 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-10-15 15:32:32,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 15:32:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-10-15 15:32:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-15 15:32:32,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:32:32,652 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-15 15:32:32,653 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:32:32,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:32:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash -545721230, now seen corresponding path program 1 times [2018-10-15 15:32:32,654 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:32:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:32:32,831 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createLAEquality(EqualityProxy.java:91) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createCCEquality(EqualityProxy.java:112) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.mbtc(LinArSolve.java:2067) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.computeConflictClause(LinArSolve.java:618) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.checkConsistency(DPLLEngine.java:1027) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.solve(DPLLEngine.java:1171) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol$CheckType$1.check(SMTInterpol.java:114) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSatAssuming(SMTInterpol.java:502) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSat(SMTInterpol.java:455) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:974) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-15 15:32:32,838 INFO L168 Benchmark]: Toolchain (without parser) took 1674.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-15 15:32:32,843 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:32:32,844 INFO L168 Benchmark]: Boogie Preprocessor took 55.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:32:32,845 INFO L168 Benchmark]: RCFGBuilder took 583.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-15 15:32:32,846 INFO L168 Benchmark]: IcfgTransformer took 29.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:32:32,847 INFO L168 Benchmark]: TraceAbstraction took 1001.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:32:32,860 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 583.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * IcfgTransformer took 29.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * TraceAbstraction took 1001.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createLAEquality(EqualityProxy.java:91) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/matrix.i_4.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_15-32-32-881.csv Received shutdown request...