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/count_by_1_variant.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:08:38,516 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:08:38,519 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:08:38,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:08:38,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:08:38,532 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:08:38,533 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:08:38,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:08:38,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:08:38,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:08:38,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 09:08:38,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 09:08:38,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 09:08:38,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 09:08:38,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 09:08:38,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 09:08:38,544 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 09:08:38,548 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 09:08:38,551 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 09:08:38,552 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 09:08:38,553 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 09:08:38,555 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 09:08:38,557 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-03 09:08:38,565 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 [2018-10-03 09:08:38,580 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:08:38,580 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:08:38,581 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:08:38,581 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:08:38,582 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:08:38,582 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:08:38,582 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:08:38,582 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:08:38,582 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:08:38,583 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:08:38,583 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:08:38,583 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:08:38,583 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:08:38,583 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:08:38,584 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:08:38,584 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:08:38,584 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:08:38,584 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:08:38,584 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:08:38,585 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:08:38,585 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:08:38,585 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:08:38,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:08:38,585 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:08:38,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:08:38,586 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:08:38,586 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:08:38,586 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:08:38,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:08:38,586 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:08:38,587 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:08:38,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:08:38,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:08:38,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:08:38,646 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:08:38,647 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:08:38,648 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl [2018-10-03 09:08:38,648 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl' [2018-10-03 09:08:38,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:08:38,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:08:38,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:08:38,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:08:38,698 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:08:38,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:08:38,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:08:38,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:08:38,739 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:08:38,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/1) ... [2018-10-03 09:08:38,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:08:38,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:08:38,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:08:38,759 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:08:38,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (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 [2018-10-03 09:08:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:08:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:08:39,048 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:08:39,049 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:08:39 BoogieIcfgContainer [2018-10-03 09:08:39,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:08:39,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:08:39,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:08:39,055 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:08:39,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:08:38" (1/2) ... [2018-10-03 09:08:39,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367ac2b0 and model type count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:08:39, skipping insertion in model container [2018-10-03 09:08:39,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:08:39" (2/2) ... [2018-10-03 09:08:39,059 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bpl [2018-10-03 09:08:39,069 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:08:39,077 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:08:39,130 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:08:39,131 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:08:39,131 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:08:39,131 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:08:39,132 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:08:39,132 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:08:39,132 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:08:39,132 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:08:39,132 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:08:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-03 09:08:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 09:08:39,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:39,155 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 09:08:39,157 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:39,163 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:39,163 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-10-03 09:08:39,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:39,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:39,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:39,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:39,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:39,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:08:39,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-03 09:08:39,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:08:39,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:08:39,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:39,377 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 4 states. [2018-10-03 09:08:39,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:39,597 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-10-03 09:08:39,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:08:39,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-03 09:08:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:39,617 INFO L225 Difference]: With dead ends: 12 [2018-10-03 09:08:39,617 INFO L226 Difference]: Without dead ends: 8 [2018-10-03 09:08:39,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:08:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-03 09:08:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-10-03 09:08:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-03 09:08:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-03 09:08:39,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-03 09:08:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:39,661 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-03 09:08:39,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:08:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-03 09:08:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:08:39,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:39,662 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-03 09:08:39,662 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:39,662 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:39,662 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-10-03 09:08:39,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:39,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:39,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:39,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:39,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:39,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:39,774 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 [2018-10-03 09:08:39,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:39,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:39,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:39,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-03 09:08:39,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:08:39,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:08:39,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:39,937 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-10-03 09:08:40,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:40,046 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-03 09:08:40,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:08:40,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-10-03 09:08:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:40,050 INFO L225 Difference]: With dead ends: 12 [2018-10-03 09:08:40,050 INFO L226 Difference]: Without dead ends: 10 [2018-10-03 09:08:40,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-03 09:08:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-03 09:08:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-10-03 09:08:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:08:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-03 09:08:40,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-03 09:08:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:40,056 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-03 09:08:40,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:08:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-03 09:08:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:08:40,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:08:40,058 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-03 09:08:40,058 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:08:40,058 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:08:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2018-10-03 09:08:40,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:08:40,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:08:40,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:40,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:08:40,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:08:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:08:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:40,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:08:40,322 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 [2018-10-03 09:08:40,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:08:40,376 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:08:40,377 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:08:40,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:08:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:08:40,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:08:40,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2018-10-03 09:08:40,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:08:40,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:08:40,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:08:40,548 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-10-03 09:08:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:08:40,710 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-10-03 09:08:40,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:08:40,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-10-03 09:08:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:08:40,711 INFO L225 Difference]: With dead ends: 12 [2018-10-03 09:08:40,711 INFO L226 Difference]: Without dead ends: 0 [2018-10-03 09:08:40,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 8 [2018-10-03 09:08:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-03 09:08:40,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-03 09:08:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-03 09:08:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-03 09:08:40,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-10-03 09:08:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:08:40,714 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-03 09:08:40,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:08:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-03 09:08:40,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-03 09:08:40,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-03 09:08:40,903 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 10 [2018-10-03 09:08:41,008 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 7 [2018-10-03 09:08:41,012 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 35) no Hoare annotation was computed. [2018-10-03 09:08:41,013 INFO L421 ceAbstractionStarter]: At program point L32(lines 32 33) the Hoare annotation is: false [2018-10-03 09:08:41,013 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 35) no Hoare annotation was computed. [2018-10-03 09:08:41,013 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 34) no Hoare annotation was computed. [2018-10-03 09:08:41,014 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-10-03 09:08:41,014 INFO L421 ceAbstractionStarter]: At program point L28(lines 13 28) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~4 0) (and (<= ULTIMATE.start_main_~i~4 1000000) (= ULTIMATE.start___VERIFIER_assert_~cond 1))) [2018-10-03 09:08:41,014 INFO L421 ceAbstractionStarter]: At program point L20(lines 20 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~4 999999) (= ULTIMATE.start___VERIFIER_assert_~cond 1)) [2018-10-03 09:08:41,025 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:08:41 BoogieIcfgContainer [2018-10-03 09:08:41,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:08:41,027 INFO L168 Benchmark]: Toolchain (without parser) took 2332.40 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-10-03 09:08:41,028 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. [2018-10-03 09:08:41,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.04 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. [2018-10-03 09:08:41,030 INFO L168 Benchmark]: Boogie Preprocessor took 18.63 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. [2018-10-03 09:08:41,031 INFO L168 Benchmark]: RCFGBuilder took 291.34 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. [2018-10-03 09:08:41,032 INFO L168 Benchmark]: TraceAbstraction took 1974.94 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2018-10-03 09:08:41,037 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 41.04 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 18.63 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 291.34 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 1974.94 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: main_~i~4 <= 0 || (main_~i~4 <= 1000000 && __VERIFIER_assert_~cond == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: main_~i~4 <= 999999 && __VERIFIER_assert_~cond == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 3 SDslu, 12 SDs, 0 SdLazy, 28 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 463 SizeOfPredicates, 6 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/16 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/count_by_1_variant.i_2.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-08-41-057.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-08-41-057.csv Received shutdown request...