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/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:54:00,806 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:54:00,808 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:54:00,820 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 00:54:00,862 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-01 00:54:00,895 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:54:00,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:54:00,897 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:54:00,897 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:54:00,897 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:54:00,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:54:00,898 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:54:00,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:54:00,898 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:54:00,902 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:54:00,902 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:54:00,902 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:54:00,902 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:54:00,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:54:00,903 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:54:00,903 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:54:00,903 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:54:00,903 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:54:00,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:54:00,904 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:54:00,904 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:54:00,904 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:54:00,904 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:54:00,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:54:00,905 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:54:00,905 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:54:00,905 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:54:00,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:54:00,907 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:54:00,908 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:54:00,908 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:54:00,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:54:00,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:54:00,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:54:01,000 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:54:01,001 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:54:01,001 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl [2018-10-01 00:54:01,002 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl' [2018-10-01 00:54:01,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:54:01,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:54:01,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:54:01,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:54:01,060 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:54:01,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:54:01,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:54:01,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:54:01,098 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:54:01,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/1) ... [2018-10-01 00:54:01,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:54:01,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:54:01,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:54:01,119 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:54:01,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:54:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:54:01,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:54:01,422 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:54:01,423 INFO L202 PluginConnector]: Adding new model num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:54:01 BoogieIcfgContainer [2018-10-01 00:54:01,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:54:01,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:54:01,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:54:01,428 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:54:01,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:54:01" (1/2) ... [2018-10-01 00:54:01,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1686ff74 and model type num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:54:01, skipping insertion in model container [2018-10-01 00:54:01,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:54:01" (2/2) ... [2018-10-01 00:54:01,432 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.i_3.bpl [2018-10-01 00:54:01,443 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:54:01,452 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:54:01,508 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:54:01,509 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:54:01,509 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:54:01,509 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:54:01,509 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:54:01,509 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:54:01,510 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:54:01,510 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:54:01,510 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:54:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-01 00:54:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 00:54:01,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:54:01,535 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 00:54:01,536 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:54:01,544 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:54:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-01 00:54:01,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:54:01,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:54:01,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:01,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:54:01,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:54:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:01,767 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:54:01,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:54:01,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:54:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:54:01,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:54:01,786 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-01 00:54:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:54:01,973 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-01 00:54:01,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:54:01,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-01 00:54:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:54:01,997 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:54:01,997 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 00:54:02,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:54:02,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 00:54:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 00:54:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 00:54:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 00:54:02,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-01 00:54:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:54:02,033 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 00:54:02,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:54:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 00:54:02,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:54:02,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:54:02,034 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-01 00:54:02,034 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:54:02,034 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:54:02,035 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-01 00:54:02,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:54:02,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:54:02,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:02,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:54:02,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:54:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:02,163 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:54:02,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:54:02,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:54:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:54:02,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:54:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:02,475 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:54:02,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-10-01 00:54:02,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:54:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:54:02,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:54:02,477 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-10-01 00:54:02,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:54:02,674 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 00:54:02,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:54:02,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-10-01 00:54:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:54:02,676 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:54:02,676 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:54:02,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:54:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:54:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:54:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:54:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 00:54:02,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-01 00:54:02,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:54:02,681 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 00:54:02,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:54:02,682 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 00:54:02,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:54:02,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:54:02,683 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-01 00:54:02,683 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:54:02,683 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:54:02,683 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-01 00:54:02,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:54:02,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:54:02,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:02,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:54:02,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:54:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:02,866 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:54:02,866 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:54:02,883 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:54:02,917 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:54:02,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:54:02,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:54:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:03,455 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:54:03,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-01 00:54:03,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:54:03,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:54:03,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:54:03,457 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-10-01 00:54:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:54:03,770 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 00:54:03,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:54:03,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-10-01 00:54:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:54:03,772 INFO L225 Difference]: With dead ends: 13 [2018-10-01 00:54:03,773 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 00:54:03,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:54:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 00:54:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 00:54:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:54:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 00:54:03,784 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-01 00:54:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:54:03,784 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 00:54:03,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:54:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 00:54:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:54:03,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:54:03,786 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-01 00:54:03,787 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:54:03,787 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:54:03,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-01 00:54:03,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:54:03,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:54:03,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:03,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:54:03,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:54:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:03,935 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:54:03,936 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:54:03,952 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:54:04,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 00:54:04,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:54:04,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:54:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:04,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:54:04,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-01 00:54:04,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:54:04,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:54:04,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:54:04,285 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-10-01 00:54:04,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:54:04,995 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 00:54:04,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:54:04,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2018-10-01 00:54:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:54:04,998 INFO L225 Difference]: With dead ends: 15 [2018-10-01 00:54:04,998 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:54:04,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:54:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:54:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:54:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:54:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 00:54:05,004 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-01 00:54:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:54:05,005 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 00:54:05,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:54:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 00:54:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:54:05,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:54:05,006 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-01 00:54:05,006 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:54:05,006 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:54:05,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-01 00:54:05,007 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:54:05,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:54:05,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:05,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:54:05,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:54:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:05,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:54:05,137 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:54:05,150 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:54:05,167 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:54:05,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:54:05,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:54:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:06,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:54:06,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-10-01 00:54:06,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:54:06,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:54:06,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:54:06,305 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-10-01 00:54:06,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:54:06,829 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 00:54:06,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:54:06,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-10-01 00:54:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:54:06,831 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:54:06,832 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:54:06,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:54:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:54:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 00:54:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:54:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 00:54:06,840 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-01 00:54:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:54:06,840 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 00:54:06,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:54:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 00:54:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:54:06,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:54:06,841 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-01 00:54:06,842 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:54:06,842 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:54:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-01 00:54:06,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:54:06,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:54:06,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:06,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:54:06,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:54:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:54:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:54:07,061 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:54:07,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:54:07,073 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:54:07,098 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-01 00:54:07,099 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:54:07,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:54:10,140 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:54:10,141 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot handle case were solver cannot decide implication of predicates at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.ImplicationGraph.internImplication(ImplicationGraph.java:211) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.ImplicationGraph.unifyPredicate(ImplicationGraph.java:111) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.BPredicateUnifier.getOrConstructPredicateInternal(BPredicateUnifier.java:246) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.BPredicateUnifier.getOrConstructPredicate(BPredicateUnifier.java:209) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) 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.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) 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:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) 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) [2018-10-01 00:54:10,148 INFO L168 Benchmark]: Toolchain (without parser) took 9092.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 267.0 MB). Peak memory consumption was 267.0 MB. Max. memory is 7.1 GB. [2018-10-01 00:54:10,151 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-10-01 00:54:10,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.75 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. [2018-10-01 00:54:10,152 INFO L168 Benchmark]: Boogie Preprocessor took 20.50 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. [2018-10-01 00:54:10,152 INFO L168 Benchmark]: RCFGBuilder took 305.04 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 00:54:10,153 INFO L168 Benchmark]: TraceAbstraction took 8723.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 245.9 MB). Peak memory consumption was 245.9 MB. Max. memory is 7.1 GB. [2018-10-01 00:54:10,158 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 0.21 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 Procedure Inliner took 37.75 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 20.50 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 305.04 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8723.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 245.9 MB). Peak memory consumption was 245.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Cannot handle case were solver cannot decide implication of predicates de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot handle case were solver cannot decide implication of predicates: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.ImplicationGraph.internImplication(ImplicationGraph.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/num_conversion_2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-54-10-170.csv Received shutdown request...