/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=12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 13:21:44,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 13:21:44,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 13:21:44,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 13:21:44,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 13:21:44,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 13:21:44,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 13:21:44,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 13:21:44,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 13:21:44,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 13:21:44,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 13:21:44,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 13:21:44,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 13:21:44,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 13:21:44,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 13:21:44,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 13:21:44,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 13:21:44,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 13:21:44,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 13:21:44,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 13:21:44,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 13:21:44,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 13:21:44,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 13:21:44,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 13:21:44,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-29 13:21:44,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-29 13:21:44,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-29 13:21:44,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-29 13:21:44,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-29 13:21:44,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-29 13:21:44,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-29 13:21:44,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-29 13:21:44,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2020-09-29 13:21:44,275 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 13:21:44,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 13:21:44,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 13:21:44,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 13:21:44,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 13:21:44,306 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 13:21:44,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 13:21:44,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 13:21:44,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 13:21:44,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 13:21:44,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 13:21:44,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 13:21:44,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 13:21:44,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 13:21:44,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 13:21:44,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 13:21:44,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 13:21:44,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 13:21:44,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 13:21:44,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 13:21:44,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 13:21:44,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 13:21:44,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 13:21:44,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 13:21:44,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 13:21:44,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 13:21:44,310 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-09-29 13:21:44,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 13:21:44,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-09-29 13:21:44,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-29 13:21:44,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 13:21:44,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 13:21:44,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 13:21:44,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 13:21:44,896 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 13:21:44,899 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 13:21:44,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=12.bpl [2020-09-29 13:21:44,902 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=12.bpl' [2020-09-29 13:21:44,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 13:21:44,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 13:21:44,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 13:21:44,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 13:21:44,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 13:21:44,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:44,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 13:21:45,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 13:21:45,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 13:21:45,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 13:21:45,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/1) ... [2020-09-29 13:21:45,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 13:21:45,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 13:21:45,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 13:21:45,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 13:21:45,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=12.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 13:21:45,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 13:21:45,137 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 13:21:45,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 13:21:45,139 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 13:21:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 13:21:45,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 13:21:45,140 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-09-29 13:21:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-29 13:21:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-29 13:21:45,141 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-09-29 13:21:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-09-29 13:21:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-09-29 13:21:45,142 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-09-29 13:21:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-09-29 13:21:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-09-29 13:21:45,143 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-09-29 13:21:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-09-29 13:21:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-09-29 13:21:45,143 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-09-29 13:21:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-09-29 13:21:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-09-29 13:21:45,145 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-09-29 13:21:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-09-29 13:21:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-09-29 13:21:45,151 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-09-29 13:21:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-09-29 13:21:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-09-29 13:21:45,152 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 13:21:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 13:21:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 13:21:45,152 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread10 given in one single declaration [2020-09-29 13:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread10 [2020-09-29 13:21:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread10 [2020-09-29 13:21:45,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread12 given in one single declaration [2020-09-29 13:21:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread12 [2020-09-29 13:21:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread12 [2020-09-29 13:21:45,153 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread11 given in one single declaration [2020-09-29 13:21:45,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread11 [2020-09-29 13:21:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread11 [2020-09-29 13:21:45,159 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 13:21:45,418 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 13:21:45,418 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-09-29 13:21:45,424 INFO L202 PluginConnector]: Adding new model example2_N=12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 01:21:45 BoogieIcfgContainer [2020-09-29 13:21:45,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 13:21:45,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 13:21:45,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 13:21:45,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 13:21:45,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 01:21:44" (1/2) ... [2020-09-29 13:21:45,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db0184c and model type example2_N=12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 01:21:45, skipping insertion in model container [2020-09-29 13:21:45,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 01:21:45" (2/2) ... [2020-09-29 13:21:45,435 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=12.bpl [2020-09-29 13:21:45,449 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-29 13:21:45,449 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 13:21:45,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 13:21:45,462 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 13:21:45,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-29 13:21:45,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 13:21:45,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-29 13:21:45,732 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 13:21:45,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 13:21:45,733 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 13:21:45,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 13:21:45,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 13:21:45,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 13:21:45,751 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 64 transitions, 224 flow [2020-09-29 13:21:47,533 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 12290 states. [2020-09-29 13:21:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 12290 states. [2020-09-29 13:21:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-29 13:21:48,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-29 13:21:48,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-29 13:21:48,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-09-29 13:21:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-29 13:21:48,131 INFO L82 PathProgramCache]: Analyzing trace with hash -771662870, now seen corresponding path program 1 times [2020-09-29 13:21:48,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-09-29 13:21:48,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70240405] [2020-09-29 13:21:48,157 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 13:21:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-29 13:21:48,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-29 13:21:48,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-29 13:21:48,384 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 13:21:48,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-09-29 13:21:48,401 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 13:21:48,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70240405] [2020-09-29 13:21:48,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-09-29 13:21:48,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2020-09-29 13:21:48,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809985674] [2020-09-29 13:21:48,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-29 13:21:48,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-09-29 13:21:48,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-29 13:21:48,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 13:21:48,435 INFO L87 Difference]: Start difference. First operand 12290 states. Second operand 3 states. [2020-09-29 13:21:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-29 13:21:48,923 INFO L93 Difference]: Finished difference Result 12289 states and 139269 transitions. [2020-09-29 13:21:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-29 13:21:48,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-09-29 13:21:48,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-29 13:21:48,948 INFO L225 Difference]: With dead ends: 12289 [2020-09-29 13:21:48,949 INFO L226 Difference]: Without dead ends: 0 [2020-09-29 13:21:48,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 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 13:21:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-29 13:21:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-29 13:21:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-29 13:21:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-29 13:21:48,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-09-29 13:21:48,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-29 13:21:48,983 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-29 13:21:48,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-29 13:21:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-29 13:21:48,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-29 13:21:49,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-09-29 13:21:49,197 INFO L202 PluginConnector]: Adding new model example2_N=12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.09 01:21:49 BasicIcfg [2020-09-29 13:21:49,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-29 13:21:49,201 INFO L168 Benchmark]: Toolchain (without parser) took 4242.10 ms. Allocated memory was 249.0 MB in the beginning and 601.9 MB in the end (delta: 352.8 MB). Free memory was 225.4 MB in the beginning and 432.2 MB in the end (delta: -206.7 MB). Peak memory consumption was 146.1 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:49,202 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.53 ms. Allocated memory is still 249.0 MB. Free memory is still 226.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-09-29 13:21:49,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.07 ms. Allocated memory is still 249.0 MB. Free memory was 224.6 MB in the beginning and 222.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:49,204 INFO L168 Benchmark]: Boogie Preprocessor took 31.95 ms. Allocated memory is still 249.0 MB. Free memory was 222.9 MB in the beginning and 222.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-09-29 13:21:49,206 INFO L168 Benchmark]: RCFGBuilder took 381.19 ms. Allocated memory is still 249.0 MB. Free memory was 222.0 MB in the beginning and 205.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:49,209 INFO L168 Benchmark]: TraceAbstraction took 3771.19 ms. Allocated memory was 249.0 MB in the beginning and 601.9 MB in the end (delta: 352.8 MB). Free memory was 204.4 MB in the beginning and 432.2 MB in the end (delta: -227.8 MB). Peak memory consumption was 125.0 MB. Max. memory is 14.2 GB. [2020-09-29 13:21:49,214 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 1.53 ms. Allocated memory is still 249.0 MB. Free memory is still 226.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.07 ms. Allocated memory is still 249.0 MB. Free memory was 224.6 MB in the beginning and 222.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 31.95 ms. Allocated memory is still 249.0 MB. Free memory was 222.9 MB in the beginning and 222.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * RCFGBuilder took 381.19 ms. Allocated memory is still 249.0 MB. Free memory was 222.0 MB in the beginning and 205.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3771.19 ms. Allocated memory was 249.0 MB in the beginning and 601.9 MB in the end (delta: 352.8 MB). Free memory was 204.4 MB in the beginning and 432.2 MB in the end (delta: -227.8 MB). Peak memory consumption was 125.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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 13 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 38 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12290occurred 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, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 8214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 329 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...