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.epf -i ../../../trunk/examples/programs/toy/nonlinear/Power2-Unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 21:35:12,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:35:12,585 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:35:12,598 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:35:12,599 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:35:12,600 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:35:12,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:35:12,603 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:35:12,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:35:12,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:35:12,607 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 21:35:12,607 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 21:35:12,608 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 21:35:12,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 21:35:12,610 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 21:35:12,611 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 21:35:12,612 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 21:35:12,614 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 21:35:12,616 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 21:35:12,618 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 21:35:12,619 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 21:35:12,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 21:35:12,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-26 21:35:12,636 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-26 21:35:12,659 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:35:12,659 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:35:12,661 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:35:12,661 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:35:12,662 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:35:12,662 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:35:12,662 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:35:12,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:35:12,663 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:35:12,664 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:35:12,664 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:35:12,664 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:35:12,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:35:12,665 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:35:12,665 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:35:12,665 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:35:12,665 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:35:12,666 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:35:12,666 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:35:12,666 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:35:12,666 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:35:12,666 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:35:12,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:35:12,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:35:12,667 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:35:12,667 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:35:12,669 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:35:12,669 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:35:12,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:35:12,669 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:35:12,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:35:12,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:35:12,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:35:12,745 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:35:12,746 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:35:12,747 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power2-Unsafe.bpl [2018-09-26 21:35:12,747 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power2-Unsafe.bpl' [2018-09-26 21:35:12,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:35:12,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:35:12,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:35:12,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:35:12,803 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:35:12,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,842 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 21:35:12,843 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 21:35:12,843 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 21:35:12,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:35:12,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:35:12,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:35:12,846 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:35:12,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/1) ... [2018-09-26 21:35:12,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:35:12,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:35:12,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:35:12,870 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:35:12,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (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 [2018-09-26 21:35:12,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure power given in one single declaration [2018-09-26 21:35:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure power [2018-09-26 21:35:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure power [2018-09-26 21:35:13,017 WARN L639 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-09-26 21:35:13,135 INFO L343 CfgBuilder]: Using library mode [2018-09-26 21:35:13,136 INFO L202 PluginConnector]: Adding new model Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:35:13 BoogieIcfgContainer [2018-09-26 21:35:13,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:35:13,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:35:13,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:35:13,140 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:35:13,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:35:12" (1/2) ... [2018-09-26 21:35:13,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3b7bf and model type Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:35:13, skipping insertion in model container [2018-09-26 21:35:13,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:35:13" (2/2) ... [2018-09-26 21:35:13,144 INFO L112 eAbstractionObserver]: Analyzing ICFG Power2-Unsafe.bpl [2018-09-26 21:35:13,154 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:35:13,162 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:35:13,213 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:35:13,214 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:35:13,214 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:35:13,214 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:35:13,214 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:35:13,215 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:35:13,215 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:35:13,215 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:35:13,215 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:35:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 21:35:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 21:35:13,237 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:35:13,238 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 21:35:13,240 INFO L423 AbstractCegarLoop]: === Iteration 1 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-09-26 21:35:13,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:35:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash 924708, now seen corresponding path program 1 times [2018-09-26 21:35:13,249 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:35:13,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:35:13,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:35:13,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:35:13,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:35:13,336 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-26 21:35:13,337 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-26 21:35:13,337 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-26 21:35:13,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:35:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:35:13,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:35:13,534 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-26 21:35:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:35:13,658 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:35:13,658 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 21:35:13,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 21:35:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 21:35:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-26 21:35:13,680 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 5 states. [2018-09-26 21:35:13,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:35:13,818 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-09-26 21:35:13,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:35:13,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-09-26 21:35:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:35:13,833 INFO L225 Difference]: With dead ends: 10 [2018-09-26 21:35:13,833 INFO L226 Difference]: Without dead ends: 6 [2018-09-26 21:35:13,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-26 21:35:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-26 21:35:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-26 21:35:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-26 21:35:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-26 21:35:13,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-09-26 21:35:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:35:13,868 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-26 21:35:13,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 21:35:13,868 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-26 21:35:13,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 21:35:13,869 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:35:13,869 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-26 21:35:13,869 INFO L423 AbstractCegarLoop]: === Iteration 2 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-09-26 21:35:13,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:35:13,870 INFO L82 PathProgramCache]: Analyzing trace with hash 28663973, now seen corresponding path program 1 times [2018-09-26 21:35:13,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:35:13,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:35:13,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:35:13,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:35:13,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:35:13,875 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-26 21:35:13,875 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-26 21:35:13,875 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-26 21:35:13,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:35:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:35:13,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:35:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:35:14,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 21:35:14,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-09-26 21:35:14,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:35:14,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:35:14,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-26 21:35:14,101 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-09-26 21:35:14,334 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-26 21:35:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:35:14,384 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-26 21:35:14,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 21:35:14,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-26 21:35:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:35:14,386 INFO L225 Difference]: With dead ends: 9 [2018-09-26 21:35:14,386 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 21:35:14,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-26 21:35:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 21:35:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 21:35:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 21:35:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 21:35:14,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-09-26 21:35:14,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:35:14,390 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 21:35:14,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:35:14,390 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 21:35:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 21:35:14,391 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:35:14,391 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 21:35:14,391 INFO L423 AbstractCegarLoop]: === Iteration 3 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-09-26 21:35:14,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 21:35:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash 888581188, now seen corresponding path program 2 times [2018-09-26 21:35:14,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:35:14,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:35:14,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:35:14,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:35:14,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:35:14,397 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-09-26 21:35:14,397 INFO L259 seRefinementStrategy]: Advancing trace checker [2018-09-26 21:35:14,397 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-09-26 21:35:14,406 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:35:14,415 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:35:14,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is sat [2018-09-26 21:35:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-26 21:35:14,454 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-09-26 21:35:14,466 WARN L389 cessorBacktranslator]: Generated EnsuresSpecification ensures res >= a * b; is not ensure(true) [2018-09-26 21:35:14,476 INFO L202 PluginConnector]: Adding new model Power2-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:35:14 BoogieIcfgContainer [2018-09-26 21:35:14,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:35:14,477 INFO L168 Benchmark]: Toolchain (without parser) took 1678.61 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. [2018-09-26 21:35:14,478 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-09-26 21:35:14,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.27 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. [2018-09-26 21:35:14,480 INFO L168 Benchmark]: Boogie Preprocessor took 23.55 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. [2018-09-26 21:35:14,480 INFO L168 Benchmark]: RCFGBuilder took 266.14 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. [2018-09-26 21:35:14,481 INFO L168 Benchmark]: TraceAbstraction took 1339.16 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. [2018-09-26 21:35:14,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.27 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 23.55 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 266.14 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 1339.16 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures res >= a * b; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: procedure postcondition can be violated procedure postcondition can be violated We found a FailurePath: [L9-L10] requires a >= 1 && b >= 0; VAL [a=1, b=2] [L15] res := 1; [L16] tmp := b; VAL [a=1, b=2, res=1, tmp=2] [L18] COND TRUE tmp > 0 [L20] res := res * a; [L21] tmp := tmp - 1; VAL [a=1, b=2, res=1, tmp=1] [L18] COND TRUE tmp > 0 [L20] res := res * a; [L21] tmp := tmp - 1; VAL [a=1, b=2, res=1, tmp=0] [L18] COND FALSE !(tmp > 0) VAL [a=1, b=2, res=1, tmp=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3 SDtfs, 14 SDslu, 2 SDs, 0 SdLazy, 34 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 2 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Power2-Unsafe.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_21-35-14-498.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Power2-Unsafe.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_21-35-14-498.csv Received shutdown request...