/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 12:02:04,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 12:02:04,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 12:02:04,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 12:02:04,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 12:02:04,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 12:02:04,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 12:02:04,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 12:02:04,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 12:02:04,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 12:02:04,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 12:02:04,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 12:02:04,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 12:02:04,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 12:02:04,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 12:02:04,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 12:02:04,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 12:02:04,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 12:02:04,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 12:02:04,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 12:02:04,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 12:02:04,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 12:02:04,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 12:02:04,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 12:02:04,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-29 12:02:04,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-29 12:02:04,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-29 12:02:04,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-29 12:02:04,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-29 12:02:04,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-29 12:02:04,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-29 12:02:04,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-29 12:02:04,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-29 12:02:04,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-29 12:02:04,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-29 12:02:04,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-29 12:02:04,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-29 12:02:04,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-29 12:02:04,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-29 12:02:04,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-29 12:02:04,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-29 12:02:04,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-29 12:02:04,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 12:02:04,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 12:02:04,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 12:02:04,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 12:02:04,212 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 12:02:04,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 12:02:04,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 12:02:04,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 12:02:04,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 12:02:04,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 12:02:04,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 12:02:04,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 12:02:04,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 12:02:04,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 12:02:04,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 12:02:04,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 12:02:04,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 12:02:04,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 12:02:04,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 12:02:04,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 12:02:04,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 12:02:04,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 12:02:04,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 12:02:04,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 12:02:04,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 12:02:04,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-29 12:02:04,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 12:02:04,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-29 12:02:04,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-29 12:02:04,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 12:02:04,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 12:02:04,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 12:02:04,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 12:02:04,976 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 12:02:04,977 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 12:02:04,978 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=02.bpl [2020-09-29 12:02:04,979 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=02.bpl' [2020-09-29 12:02:05,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 12:02:05,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 12:02:05,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 12:02:05,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 12:02:05,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 12:02:05,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 12:02:05,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 12:02:05,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 12:02:05,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 12:02:05,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/1) ... [2020-09-29 12:02:05,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 12:02:05,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 12:02:05,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 12:02:05,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 12:02:05,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (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 12:02:05,209 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 12:02:05,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 12:02:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 12:02:05,210 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 12:02:05,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 12:02:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 12:02:05,211 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 12:02:05,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 12:02:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 12:02:05,213 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 12:02:05,396 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 12:02:05,397 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-29 12:02:05,401 INFO L202 PluginConnector]: Adding new model example2_N=02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 12:02:05 BoogieIcfgContainer [2020-09-29 12:02:05,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 12:02:05,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 12:02:05,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 12:02:05,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 12:02:05,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 12:02:05" (1/2) ... [2020-09-29 12:02:05,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d4dd3e and model type example2_N=02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 12:02:05, skipping insertion in model container [2020-09-29 12:02:05,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 12:02:05" (2/2) ... [2020-09-29 12:02:05,411 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=02.bpl [2020-09-29 12:02:05,423 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-29 12:02:05,424 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 12:02:05,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 12:02:05,435 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 12:02:05,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-29 12:02:05,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 12:02:05,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-29 12:02:05,532 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 12:02:05,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 12:02:05,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 12:02:05,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 12:02:05,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 12:02:05,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 12:02:05,549 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 14 transitions, 44 flow [2020-09-29 12:02:05,552 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 19 places, 14 transitions, 44 flow [2020-09-29 12:02:05,582 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2020-09-29 12:02:05,582 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-29 12:02:05,588 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 2/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2020-09-29 12:02:05,589 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 19 places, 14 transitions, 44 flow [2020-09-29 12:02:05,596 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2020-09-29 12:02:05,596 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-29 12:02:05,597 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 2/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2020-09-29 12:02:05,597 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 16 [2020-09-29 12:02:05,599 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-29 12:02:05,645 INFO L206 etLargeBlockEncoding]: Checked pairs total: 0 [2020-09-29 12:02:05,646 INFO L214 etLargeBlockEncoding]: Total number of compositions: 1 [2020-09-29 12:02:05,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 42 flow [2020-09-29 12:02:05,659 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13 states. [2020-09-29 12:02:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-09-29 12:02:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-29 12:02:05,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-29 12:02:05,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-29 12:02:05,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-29 12:02:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-29 12:02:05,681 INFO L82 PathProgramCache]: Analyzing trace with hash 901704770, now seen corresponding path program 1 times [2020-09-29 12:02:05,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-29 12:02:05,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366647947] [2020-09-29 12:02:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-29 12:02:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-29 12:02:05,870 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 12:02:05,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366647947] [2020-09-29 12:02:05,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-29 12:02:05,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-29 12:02:05,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32936830] [2020-09-29 12:02:05,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-29 12:02:05,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-29 12:02:05,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-29 12:02:05,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 12:02:05,902 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-09-29 12:02:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-29 12:02:05,999 INFO L93 Difference]: Finished difference Result 12 states and 20 transitions. [2020-09-29 12:02:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-29 12:02:06,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-29 12:02:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-29 12:02:06,012 INFO L225 Difference]: With dead ends: 12 [2020-09-29 12:02:06,012 INFO L226 Difference]: Without dead ends: 0 [2020-09-29 12:02:06,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 12:02:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-29 12:02:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-29 12:02:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-29 12:02:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-29 12:02:06,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-09-29 12:02:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-29 12:02:06,095 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-29 12:02:06,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-29 12:02:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-29 12:02:06,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-29 12:02:06,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-29 12:02:06,107 INFO L202 PluginConnector]: Adding new model example2_N=02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.09 12:02:06 BasicIcfg [2020-09-29 12:02:06,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-29 12:02:06,112 INFO L168 Benchmark]: Toolchain (without parser) took 1081.06 ms. Allocated memory is still 247.5 MB. Free memory was 223.8 MB in the beginning and 183.5 MB in the end (delta: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 14.2 GB. [2020-09-29 12:02:06,113 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.66 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-09-29 12:02:06,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 247.5 MB. Free memory was 223.8 MB in the beginning and 221.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-09-29 12:02:06,116 INFO L168 Benchmark]: Boogie Preprocessor took 28.97 ms. Allocated memory is still 247.5 MB. Free memory was 221.3 MB in the beginning and 218.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-09-29 12:02:06,118 INFO L168 Benchmark]: RCFGBuilder took 287.09 ms. Allocated memory is still 247.5 MB. Free memory was 218.8 MB in the beginning and 208.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.2 GB. [2020-09-29 12:02:06,119 INFO L168 Benchmark]: TraceAbstraction took 704.75 ms. Allocated memory is still 247.5 MB. Free memory was 208.7 MB in the beginning and 183.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 14.2 GB. [2020-09-29 12:02:06,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.66 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 247.5 MB. Free memory was 223.8 MB in the beginning and 221.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.97 ms. Allocated memory is still 247.5 MB. Free memory was 221.3 MB in the beginning and 218.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 287.09 ms. Allocated memory is still 247.5 MB. Free memory was 218.8 MB in the beginning and 208.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 704.75 ms. Allocated memory is still 247.5 MB. Free memory was 208.7 MB in the beginning and 183.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.0s, 19 ProgramPointsBefore, 18 ProgramPointsAfterwards, 14 TransitionsBefore, 13 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 0 CheckedPairsTotal, 1 TotalNumberOfCompositions - PositiveResult [Line: 14]: 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 3 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 7 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...