/usr/bin/java -Xmx16000000000 -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/VMCAI2021_FA.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=09.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 13:21:43,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 13:21:43,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 13:21:43,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 13:21:43,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 13:21:43,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 13:21:43,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 13:21:43,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 13:21:43,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 13:21:43,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 13:21:43,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 13:21:43,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 13:21:43,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 13:21:43,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 13:21:43,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 13:21:43,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 13:21:43,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 13:21:43,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 13:21:43,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 13:21:43,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 13:21:43,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 13:21:43,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 13:21:43,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 13:21:43,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 13:21:43,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-29 13:21:43,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_FA.epf [2020-09-29 13:21:43,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 13:21:43,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 13:21:43,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 13:21:43,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 13:21:43,715 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 13:21:43,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 13:21:43,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 13:21:43,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 13:21:43,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 13:21:43,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 13:21:43,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 13:21:43,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 13:21:43,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 13:21:43,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 13:21:43,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 13:21:43,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 13:21:43,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 13:21:43,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 13:21:43,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 13:21:43,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 13:21:43,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 13:21:43,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 13:21:43,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 13:21:43,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 13:21:43,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 13:21:43,728 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-09-29 13:21:43,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 13:21:43,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-09-29 13:21:43,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-29 13:21:43,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 13:21:44,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 13:21:44,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 13:21:44,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 13:21:44,257 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 13:21:44,258 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 13:21:44,260 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=09.bpl [2020-09-29 13:21:44,261 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=09.bpl' [2020-09-29 13:21:44,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 13:21:44,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 13:21:44,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 13:21:44,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 13:21:44,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 13:21:44,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 13:21:44,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 13:21:44,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 13:21:44,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 13:21:44,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 13:21:44,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 13:21:44,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 13:21:44,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 13:21:44,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (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 [2020-09-29 13:21:44,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 13:21:44,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 13:21:44,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 13:21:44,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 13:21:44,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 13:21:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 13:21:44,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-09-29 13:21:44,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-29 13:21:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-29 13:21:44,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 13:21:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 13:21:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 13:21:44,543 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-09-29 13:21:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-09-29 13:21:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-09-29 13:21:44,543 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-09-29 13:21:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-09-29 13:21:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-09-29 13:21:44,544 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-09-29 13:21:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-09-29 13:21:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-09-29 13:21:44,545 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-09-29 13:21:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-09-29 13:21:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-09-29 13:21:44,545 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-09-29 13:21:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-09-29 13:21:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-09-29 13:21:44,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-09-29 13:21:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-09-29 13:21:44,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-09-29 13:21:44,548 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-29 13:21:44,762 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 13:21:44,763 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-29 13:21:44,768 INFO L202 PluginConnector]: Adding new model example2_N=09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 01:21:44 BoogieIcfgContainer [2020-09-29 13:21:44,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 13:21:44,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 13:21:44,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 13:21:44,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 13:21:44,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/2) ... [2020-09-29 13:21:44,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c873f42 and model type example2_N=09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 01:21:44, skipping insertion in model container [2020-09-29 13:21:44,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 01:21:44" (2/2) ... [2020-09-29 13:21:44,777 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=09.bpl [2020-09-29 13:21:44,791 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-29 13:21:44,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 13:21:44,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 13:21:44,804 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 13:21:45,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-09-29 13:21:45,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 13:21:45,034 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-29 13:21:45,034 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 13:21:45,034 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 13:21:45,034 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 13:21:45,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 13:21:45,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 13:21:45,035 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 13:21:45,051 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 49 transitions, 170 flow [2020-09-29 13:21:45,229 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1538 states. [2020-09-29 13:21:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states. [2020-09-29 13:21:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-29 13:21:45,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-29 13:21:45,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-29 13:21:45,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-09-29 13:21:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-29 13:21:45,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1186414738, now seen corresponding path program 1 times [2020-09-29 13:21:45,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-09-29 13:21:45,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586227982] [2020-09-29 13:21:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-09-29 13:21:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-29 13:21:45,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-29 13:21:45,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-29 13:21:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-29 13:21:45,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-09-29 13:21:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-29 13:21:45,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586227982] [2020-09-29 13:21:45,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-09-29 13:21:45,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-09-29 13:21:45,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30188329] [2020-09-29 13:21:45,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-29 13:21:45,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-09-29 13:21:45,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-29 13:21:45,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 13:21:45,584 INFO L87 Difference]: Start difference. First operand 1538 states. Second operand 3 states. [2020-09-29 13:21:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-29 13:21:45,713 INFO L93 Difference]: Finished difference Result 1537 states and 12805 transitions. [2020-09-29 13:21:45,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-29 13:21:45,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-29 13:21:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-29 13:21:45,725 INFO L225 Difference]: With dead ends: 1537 [2020-09-29 13:21:45,726 INFO L226 Difference]: Without dead ends: 0 [2020-09-29 13:21:45,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 13:21:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-29 13:21:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-29 13:21:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-29 13:21:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-29 13:21:45,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-29 13:21:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-29 13:21:45,767 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-29 13:21:45,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-29 13:21:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-29 13:21:45,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-29 13:21:45,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-09-29 13:21:45,988 INFO L202 PluginConnector]: Adding new model example2_N=09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.09 01:21:45 BasicIcfg [2020-09-29 13:21:45,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-29 13:21:45,992 INFO L168 Benchmark]: Toolchain (without parser) took 1660.34 ms. Allocated memory is still 248.5 MB. Free memory was 224.9 MB in the beginning and 116.0 MB in the end (delta: 108.9 MB). Peak memory consumption was 108.9 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:45,993 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.49 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-09-29 13:21:45,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.33 ms. Allocated memory is still 248.5 MB. Free memory is still 222.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-09-29 13:21:45,995 INFO L168 Benchmark]: Boogie Preprocessor took 51.45 ms. Allocated memory is still 248.5 MB. Free memory was 222.4 MB in the beginning and 219.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:45,996 INFO L168 Benchmark]: RCFGBuilder took 327.28 ms. Allocated memory is still 248.5 MB. Free memory was 219.9 MB in the beginning and 204.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:45,997 INFO L168 Benchmark]: TraceAbstraction took 1219.74 ms. Allocated memory is still 248.5 MB. Free memory was 204.8 MB in the beginning and 116.0 MB in the end (delta: 88.8 MB). Peak memory consumption was 88.8 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:46,001 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 1.49 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.33 ms. Allocated memory is still 248.5 MB. Free memory is still 222.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 51.45 ms. Allocated memory is still 248.5 MB. Free memory was 222.4 MB in the beginning and 219.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 327.28 ms. Allocated memory is still 248.5 MB. Free memory was 219.9 MB in the beginning and 204.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1219.74 ms. Allocated memory is still 248.5 MB. Free memory was 204.8 MB in the beginning and 116.0 MB in the end (delta: 88.8 MB). Peak memory consumption was 88.8 MB. Max. memory is 14.2 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 29 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1538occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 4704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 194 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...