/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/max.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 17:15:38,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:15:38,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:15:38,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 17:15:38,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-02-19 17:15:38,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:15:38,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:15:38,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 17:15:38,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 17:15:38,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:15:38,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:15:38,657 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:15:38,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:15:38,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:15:38,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:15:38,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:15:38,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:15:38,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:15:38,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:15:38,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:15:38,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:15:38,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:15:38,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:15:38,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:15:38,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:15:38,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:15:38,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 17:15:38,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:15:38,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:15:38,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:15:38,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:15:38,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:15:38,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:15:38,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:15:38,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 17:15:38,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:15:38,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:15:38,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:15:39,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:15:39,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:15:39,189 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 17:15:39,191 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 17:15:39,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/max.wvr.bpl [2021-02-19 17:15:39,192 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/max.wvr.bpl' [2021-02-19 17:15:39,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:15:39,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:15:39,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 17:15:39,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 17:15:39,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 17:15:39,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 17:15:39,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:15:39,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:15:39,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:15:39,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/1) ... [2021-02-19 17:15:39,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:15:39,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:15:39,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:15:39,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:15:39,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (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 [2021-02-19 17:15:39,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 17:15:39,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:15:39,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:15:39,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:15:39,813 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 17:15:39,814 INFO L202 PluginConnector]: Adding new model max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:15:39 BoogieIcfgContainer [2021-02-19 17:15:39,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:15:39,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:15:39,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:15:39,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:15:39,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 05:15:39" (1/2) ... [2021-02-19 17:15:39,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6436faf1 and model type max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:15:39, skipping insertion in model container [2021-02-19 17:15:39,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:15:39" (2/2) ... [2021-02-19 17:15:39,820 INFO L111 eAbstractionObserver]: Analyzing ICFG max.wvr.bpl [2021-02-19 17:15:39,825 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:15:39,828 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:15:39,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:15:39,860 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:15:39,861 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:15:39,861 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:15:39,861 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:15:39,861 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:15:39,861 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:15:39,861 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:15:39,862 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:15:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-02-19 17:15:39,876 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 17:15:39,877 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-02-19 17:15:39,877 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 17:15:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:15:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash 30208, now seen corresponding path program 1 times [2021-02-19 17:15:39,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:15:39,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292929408] [2021-02-19 17:15:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:15:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:15:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:15:40,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292929408] [2021-02-19 17:15:40,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:15:40,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-02-19 17:15:40,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622174870] [2021-02-19 17:15:40,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:15:40,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:15:40,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:15:40,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:15:40,168 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:15:40,204 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2021-02-19 17:15:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:15:40,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-02-19 17:15:40,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:15:40,211 INFO L225 Difference]: With dead ends: 13 [2021-02-19 17:15:40,211 INFO L226 Difference]: Without dead ends: 9 [2021-02-19 17:15:40,213 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:15:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-02-19 17:15:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2021-02-19 17:15:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-02-19 17:15:40,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 3 [2021-02-19 17:15:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:15:40,238 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-02-19 17:15:40,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2021-02-19 17:15:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-02-19 17:15:40,239 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 17:15:40,239 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-02-19 17:15:40,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:15:40,239 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 17:15:40,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:15:40,242 INFO L82 PathProgramCache]: Analyzing trace with hash 891417290, now seen corresponding path program 1 times [2021-02-19 17:15:40,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:15:40,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111398508] [2021-02-19 17:15:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:15:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:15:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:15:40,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111398508] [2021-02-19 17:15:40,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009199086] [2021-02-19 17:15:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2021-02-19 17:15:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:15:40,499 WARN L261 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 12 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 17:15:40,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 17:15:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:15:40,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 17:15:40,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-02-19 17:15:40,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166145573] [2021-02-19 17:15:40,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:15:40,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:15:40,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:15:40,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:15:40,658 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:15:40,715 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-02-19 17:15:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 17:15:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-02-19 17:15:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:15:40,717 INFO L225 Difference]: With dead ends: 17 [2021-02-19 17:15:40,717 INFO L226 Difference]: Without dead ends: 15 [2021-02-19 17:15:40,718 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:15:40,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-19 17:15:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-02-19 17:15:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-02-19 17:15:40,724 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2021-02-19 17:15:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:15:40,724 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-02-19 17:15:40,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-02-19 17:15:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-02-19 17:15:40,725 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 17:15:40,725 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-02-19 17:15:40,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-19 17:15:40,938 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 17:15:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:15:40,939 INFO L82 PathProgramCache]: Analyzing trace with hash 891476872, now seen corresponding path program 1 times [2021-02-19 17:15:40,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:15:40,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194332388] [2021-02-19 17:15:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:15:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:15:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:15:41,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194332388] [2021-02-19 17:15:41,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086139956] [2021-02-19 17:15:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-02-19 17:15:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:15:41,135 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 17:15:41,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 17:15:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:15:41,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 17:15:41,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-02-19 17:15:41,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612237595] [2021-02-19 17:15:41,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:15:41,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:15:41,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:15:41,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:15:41,272 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:15:41,331 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-02-19 17:15:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:15:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-02-19 17:15:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:15:41,333 INFO L225 Difference]: With dead ends: 20 [2021-02-19 17:15:41,333 INFO L226 Difference]: Without dead ends: 18 [2021-02-19 17:15:41,335 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:15:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-02-19 17:15:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-02-19 17:15:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-02-19 17:15:41,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2021-02-19 17:15:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:15:41,341 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-02-19 17:15:41,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:41,341 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-02-19 17:15:41,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-02-19 17:15:41,341 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 17:15:41,342 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-02-19 17:15:41,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 17:15:41,564 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 17:15:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:15:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash 421245566, now seen corresponding path program 1 times [2021-02-19 17:15:41,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:15:41,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963266182] [2021-02-19 17:15:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:15:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:15:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:15:41,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963266182] [2021-02-19 17:15:41,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812626025] [2021-02-19 17:15:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2021-02-19 17:15:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:15:41,799 WARN L261 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 14 conjunts are in the unsatisfiable core [2021-02-19 17:15:41,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 17:15:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:15:41,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 17:15:41,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-02-19 17:15:41,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021331128] [2021-02-19 17:15:41,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-19 17:15:41,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:15:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-19 17:15:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-02-19 17:15:41,960 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:15:42,110 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-02-19 17:15:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-19 17:15:42,111 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-02-19 17:15:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:15:42,111 INFO L225 Difference]: With dead ends: 19 [2021-02-19 17:15:42,111 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 17:15:42,111 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-02-19 17:15:42,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 17:15:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 17:15:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 17:15:42,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-02-19 17:15:42,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:15:42,112 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 17:15:42,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 17:15:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 17:15:42,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 17:15:42,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 17:15:42,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 17:15:42,380 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(lines 14 29) no Hoare annotation was computed. [2021-02-19 17:15:42,380 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startENTRY(lines 14 29) no Hoare annotation was computed. [2021-02-19 17:15:42,380 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(lines 14 29) no Hoare annotation was computed. [2021-02-19 17:15:42,380 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-02-19 17:15:42,380 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 28) no Hoare annotation was computed. [2021-02-19 17:15:42,380 INFO L198 CegarLoopUtils]: For program point L21(lines 21 24) no Hoare annotation was computed. [2021-02-19 17:15:42,380 INFO L198 CegarLoopUtils]: For program point L21-2(lines 21 24) no Hoare annotation was computed. [2021-02-19 17:15:42,381 INFO L194 CegarLoopUtils]: At program point L20-1(lines 20 26) the Hoare annotation is: (or (let ((.cse0 (+ j 1))) (and (< i .cse0) (<= .cse0 n))) (<= (select A j) (select A r))) [2021-02-19 17:15:42,390 INFO L202 PluginConnector]: Adding new model max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:15:42 BoogieIcfgContainer [2021-02-19 17:15:42,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:15:42,391 INFO L168 Benchmark]: Toolchain (without parser) took 3171.28 ms. Allocated memory is still 346.0 MB. Free memory was 326.4 MB in the beginning and 145.1 MB in the end (delta: 181.3 MB). Peak memory consumption was 182.6 MB. Max. memory is 16.0 GB. [2021-02-19 17:15:42,391 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.32 ms. Allocated memory is still 346.0 MB. Free memory was 327.4 MB in the beginning and 327.3 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 17:15:42,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.28 ms. Allocated memory is still 346.0 MB. Free memory was 325.8 MB in the beginning and 324.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 17:15:42,392 INFO L168 Benchmark]: Boogie Preprocessor took 16.17 ms. Allocated memory is still 346.0 MB. Free memory was 324.4 MB in the beginning and 323.5 MB in the end (delta: 901.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-19 17:15:42,392 INFO L168 Benchmark]: RCFGBuilder took 189.87 ms. Allocated memory is still 346.0 MB. Free memory was 323.4 MB in the beginning and 314.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-02-19 17:15:42,392 INFO L168 Benchmark]: TraceAbstraction took 2574.71 ms. Allocated memory is still 346.0 MB. Free memory was 314.3 MB in the beginning and 145.1 MB in the end (delta: 169.1 MB). Peak memory consumption was 170.0 MB. Max. memory is 16.0 GB. [2021-02-19 17:15:42,393 INFO L339 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 0.32 ms. Allocated memory is still 346.0 MB. Free memory was 327.4 MB in the beginning and 327.3 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.28 ms. Allocated memory is still 346.0 MB. Free memory was 325.8 MB in the beginning and 324.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.17 ms. Allocated memory is still 346.0 MB. Free memory was 324.4 MB in the beginning and 323.5 MB in the end (delta: 901.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 189.87 ms. Allocated memory is still 346.0 MB. Free memory was 323.4 MB in the beginning and 314.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2574.71 ms. Allocated memory is still 346.0 MB. Free memory was 314.3 MB in the beginning and 145.1 MB in the end (delta: 169.1 MB). Peak memory consumption was 170.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: 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: 20]: Loop Invariant Derived loop invariant: (i < j + 1 && j + 1 <= n) || A[j] <= A[r] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 27 SDslu, 10 SDs, 0 SdLazy, 134 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 19 HoareAnnotationTreeSize, 1 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 98 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 2 QuantifiedInterpolants, 3966 SizeOfPredicates, 15 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...