/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 20:50:34,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 20:50:34,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 20:50:34,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 20:50:34,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 20:50:34,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 20:50:34,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 20:50:34,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 20:50:34,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 20:50:34,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 20:50:34,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 20:50:34,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 20:50:34,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 20:50:34,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 20:50:34,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 20:50:34,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 20:50:34,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 20:50:34,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 20:50:34,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 20:50:34,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 20:50:34,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 20:50:34,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 20:50:34,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 20:50:34,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 20:50:34,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-01-16 20:50:34,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-01-16 20:50:34,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-01-16 20:50:34,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-01-16 20:50:34,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-01-16 20:50:34,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-01-16 20:50:34,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-01-16 20:50:34,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-01-16 20:50:34,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-01-16 20:50:34,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-01-16 20:50:34,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-01-16 20:50:34,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-01-16 20:50:34,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-01-16 20:50:34,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-01-16 20:50:34,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 20:50:34,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 20:50:34,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 20:50:34,219 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-MCR.epf [2020-01-16 20:50:34,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 20:50:34,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 20:50:34,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 20:50:34,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 20:50:34,237 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 20:50:34,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 20:50:34,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 20:50:34,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 20:50:34,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 20:50:34,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 20:50:34,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 20:50:34,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 20:50:34,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 20:50:34,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 20:50:34,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 20:50:34,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 20:50:34,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 20:50:34,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 20:50:34,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 20:50:34,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 20:50:34,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 20:50:34,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 20:50:34,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 20:50:34,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 20:50:34,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 20:50:34,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 20:50:34,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 20:50:34,242 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 20:50:34,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-01-16 20:50:34,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 20:50:34,243 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 20:50:34,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 20:50:34,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 20:50:34,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 20:50:34,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 20:50:34,546 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 20:50:34,547 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 20:50:34,547 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl [2020-01-16 20:50:34,548 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl' [2020-01-16 20:50:34,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 20:50:34,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 20:50:34,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 20:50:34,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 20:50:34,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 20:50:34,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 20:50:34,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 20:50:34,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 20:50:34,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 20:50:34,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/1) ... [2020-01-16 20:50:34,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 20:50:34,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 20:50:34,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 20:50:34,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 20:50:34,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (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 [2020-01-16 20:50:34,732 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 20:50:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 20:50:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 20:50:34,735 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 20:50:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 20:50:34,735 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 20:50:34,735 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 20:50:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 20:50:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 20:50:34,736 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 20:50:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 20:50:34,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 20:50:34,737 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 20:50:34,910 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 20:50:34,910 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 20:50:34,912 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 08:50:34 BoogieIcfgContainer [2020-01-16 20:50:34,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 20:50:34,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 20:50:34,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 20:50:34,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 20:50:34,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 08:50:34" (1/2) ... [2020-01-16 20:50:34,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7d8a2d and model type example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 08:50:34, skipping insertion in model container [2020-01-16 20:50:34,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 08:50:34" (2/2) ... [2020-01-16 20:50:34,922 INFO L109 eAbstractionObserver]: Analyzing ICFG example_3.bpl [2020-01-16 20:50:34,932 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 20:50:34,933 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 20:50:34,943 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 20:50:34,947 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 20:50:35,121 INFO L250 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-01-16 20:50:35,163 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 20:50:35,163 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 20:50:35,163 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 20:50:35,164 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 20:50:35,164 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 20:50:35,164 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 20:50:35,164 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 20:50:35,164 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 20:50:35,173 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions [2020-01-16 20:50:35,190 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 80 states. [2020-01-16 20:50:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-01-16 20:50:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 20:50:35,205 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:35,206 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:35,207 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 20:50:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash -921991571, now seen corresponding path program 1 times [2020-01-16 20:50:35,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:35,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520531799] [2020-01-16 20:50:35,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:35,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520531799] [2020-01-16 20:50:35,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:35,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:35,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [723714535] [2020-01-16 20:50:35,375 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:35,385 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:35,418 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 54 states and 109 transitions. [2020-01-16 20:50:35,419 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:35,437 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 3 times. [2020-01-16 20:50:35,437 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:35,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:35,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:35,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:35,452 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-01-16 20:50:35,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:35,493 INFO L93 Difference]: Finished difference Result 65 states and 135 transitions. [2020-01-16 20:50:35,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:35,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-01-16 20:50:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:35,507 INFO L225 Difference]: With dead ends: 65 [2020-01-16 20:50:35,509 INFO L226 Difference]: Without dead ends: 63 [2020-01-16 20:50:35,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-01-16 20:50:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-01-16 20:50:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-01-16 20:50:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 133 transitions. [2020-01-16 20:50:35,577 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 133 transitions. Word has length 13 [2020-01-16 20:50:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:35,578 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 133 transitions. [2020-01-16 20:50:35,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 133 transitions. [2020-01-16 20:50:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 20:50:35,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:35,581 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:35,582 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 20:50:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash -922453781, now seen corresponding path program 1 times [2020-01-16 20:50:35,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:35,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787915677] [2020-01-16 20:50:35,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:35,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787915677] [2020-01-16 20:50:35,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:35,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-01-16 20:50:35,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [761213494] [2020-01-16 20:50:35,738 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:35,739 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:35,743 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 54 states and 109 transitions. [2020-01-16 20:50:35,743 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:35,964 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 12 times. [2020-01-16 20:50:35,969 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 20:50:35,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:35,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 20:50:35,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-01-16 20:50:35,971 INFO L87 Difference]: Start difference. First operand 63 states and 133 transitions. Second operand 11 states. [2020-01-16 20:50:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:36,379 INFO L93 Difference]: Finished difference Result 90 states and 187 transitions. [2020-01-16 20:50:36,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-01-16 20:50:36,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2020-01-16 20:50:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:36,381 INFO L225 Difference]: With dead ends: 90 [2020-01-16 20:50:36,381 INFO L226 Difference]: Without dead ends: 44 [2020-01-16 20:50:36,382 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-01-16 20:50:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-01-16 20:50:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-01-16 20:50:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-01-16 20:50:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 83 transitions. [2020-01-16 20:50:36,389 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 83 transitions. Word has length 13 [2020-01-16 20:50:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:36,389 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 83 transitions. [2020-01-16 20:50:36,389 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 20:50:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 83 transitions. [2020-01-16 20:50:36,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-01-16 20:50:36,390 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 20:50:36,391 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 20:50:36,391 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-01-16 20:50:36,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 20:50:36,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1979240905, now seen corresponding path program 1 times [2020-01-16 20:50:36,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 20:50:36,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968122778] [2020-01-16 20:50:36,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 20:50:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 20:50:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 20:50:36,414 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968122778] [2020-01-16 20:50:36,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 20:50:36,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 20:50:36,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [515799479] [2020-01-16 20:50:36,415 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 20:50:36,416 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-01-16 20:50:36,419 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 54 states and 109 transitions. [2020-01-16 20:50:36,419 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-01-16 20:50:36,421 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 4 times. [2020-01-16 20:50:36,421 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 20:50:36,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 20:50:36,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 20:50:36,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:36,422 INFO L87 Difference]: Start difference. First operand 44 states and 83 transitions. Second operand 3 states. [2020-01-16 20:50:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 20:50:36,423 INFO L93 Difference]: Finished difference Result 30 states and 55 transitions. [2020-01-16 20:50:36,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 20:50:36,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-01-16 20:50:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 20:50:36,424 INFO L225 Difference]: With dead ends: 30 [2020-01-16 20:50:36,424 INFO L226 Difference]: Without dead ends: 0 [2020-01-16 20:50:36,425 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 20:50:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-01-16 20:50:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-01-16 20:50:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-01-16 20:50:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-01-16 20:50:36,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-01-16 20:50:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 20:50:36,426 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-01-16 20:50:36,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 20:50:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-01-16 20:50:36,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-01-16 20:50:36,432 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 08:50:36 BasicIcfg [2020-01-16 20:50:36,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 20:50:36,435 INFO L168 Benchmark]: Toolchain (without parser) took 1854.17 ms. Allocated memory was 142.6 MB in the beginning and 172.5 MB in the end (delta: 29.9 MB). Free memory was 119.2 MB in the beginning and 82.8 MB in the end (delta: 36.4 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:36,436 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 20:50:36,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.43 ms. Allocated memory is still 142.6 MB. Free memory was 119.0 MB in the beginning and 117.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:36,438 INFO L168 Benchmark]: Boogie Preprocessor took 21.47 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 116.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:36,439 INFO L168 Benchmark]: RCFGBuilder took 268.25 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 106.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:36,440 INFO L168 Benchmark]: TraceAbstraction took 1518.99 ms. Allocated memory was 142.6 MB in the beginning and 172.5 MB in the end (delta: 29.9 MB). Free memory was 105.8 MB in the beginning and 82.8 MB in the end (delta: 23.0 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-01-16 20:50:36,444 INFO L335 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 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.43 ms. Allocated memory is still 142.6 MB. Free memory was 119.0 MB in the beginning and 117.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.47 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 116.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 268.25 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 106.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1518.99 ms. Allocated memory was 142.6 MB in the beginning and 172.5 MB in the end (delta: 29.9 MB). Free memory was 105.8 MB in the beginning and 82.8 MB in the end (delta: 23.0 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 78 SDslu, 169 SDs, 0 SdLazy, 56 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...