/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationInline.xml -s ../../../trunk/examples/settings/ai/thread-modular/svcomp-Reach-32bit-Automizer_Default+AIv2_OCT_FLOW_SENSITIVE_FILTERED.epf -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.absint-concur-c9b613c-m [2022-09-21 14:30:10,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-21 14:30:10,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-21 14:30:10,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-21 14:30:10,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-21 14:30:10,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-21 14:30:10,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-21 14:30:10,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-21 14:30:10,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-21 14:30:10,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-21 14:30:10,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-21 14:30:10,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-21 14:30:10,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-21 14:30:10,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-21 14:30:10,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-21 14:30:10,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-21 14:30:10,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-21 14:30:10,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-21 14:30:10,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-21 14:30:10,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-21 14:30:10,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-21 14:30:10,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-21 14:30:10,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-21 14:30:10,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-21 14:30:10,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-21 14:30:10,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-21 14:30:10,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-21 14:30:10,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-21 14:30:10,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-21 14:30:10,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-21 14:30:10,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-21 14:30:10,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-21 14:30:10,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-21 14:30:10,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-21 14:30:10,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-21 14:30:10,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-21 14:30:10,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-21 14:30:10,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-21 14:30:10,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-21 14:30:10,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-21 14:30:10,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-21 14:30:10,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/thread-modular/svcomp-Reach-32bit-Automizer_Default+AIv2_OCT_FLOW_SENSITIVE_FILTERED.epf [2022-09-21 14:30:10,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-21 14:30:10,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-21 14:30:10,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-21 14:30:10,270 INFO L138 SettingsManager]: * Log level for plugins=info [2022-09-21 14:30:10,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-21 14:30:10,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-21 14:30:10,271 INFO L138 SettingsManager]: * User list type=DISABLED [2022-09-21 14:30:10,272 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2022-09-21 14:30:10,272 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2022-09-21 14:30:10,272 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-09-21 14:30:10,272 INFO L138 SettingsManager]: * Computation of Interferences for Sequential Abstract Interpretation of each procedure=FLOW_SENSITIVE_FILTERED [2022-09-21 14:30:10,273 INFO L138 SettingsManager]: * Abstract domain=OctagonDomain [2022-09-21 14:30:10,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-21 14:30:10,273 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-21 14:30:10,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-21 14:30:10,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-21 14:30:10,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-21 14:30:10,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-21 14:30:10,275 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-09-21 14:30:10,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-21 14:30:10,275 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2022-09-21 14:30:10,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-21 14:30:10,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-21 14:30:10,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-21 14:30:10,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-21 14:30:10,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-21 14:30:10,502 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-21 14:30:10,506 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-21 14:30:10,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl [2022-09-21 14:30:10,507 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl' [2022-09-21 14:30:10,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-21 14:30:10,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-21 14:30:10,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-21 14:30:10,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-21 14:30:10,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-21 14:30:10,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,555 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-21 14:30:10,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-21 14:30:10,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-21 14:30:10,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-21 14:30:10,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-21 14:30:10,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-21 14:30:10,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-21 14:30:10,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-21 14:30:10,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-21 14:30:10,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-21 14:30:10,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-21 14:30:10,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-21 14:30:10,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-21 14:30:10,659 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-09-21 14:30:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-21 14:30:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-21 14:30:10,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-09-21 14:30:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-21 14:30:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-21 14:30:10,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-21 14:30:10,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-21 14:30:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-21 14:30:10,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-09-21 14:30:10,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-21 14:30:10,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-21 14:30:10,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-09-21 14:30:10,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-21 14:30:10,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-21 14:30:10,663 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-21 14:30:10,710 INFO L234 CfgBuilder]: Building ICFG [2022-09-21 14:30:10,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-21 14:30:10,853 INFO L275 CfgBuilder]: Performing block encoding [2022-09-21 14:30:10,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-21 14:30:10,887 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-21 14:30:10,889 INFO L202 PluginConnector]: Adding new model buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 02:30:10 BoogieIcfgContainer [2022-09-21 14:30:10,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-21 14:30:10,902 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2022-09-21 14:30:10,902 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2022-09-21 14:30:10,902 INFO L275 PluginConnector]: Abstract Interpretation initialized [2022-09-21 14:30:10,917 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 02:30:10" (1/1) ... [2022-09-21 14:30:10,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-21 14:30:10,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-21 14:30:10,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-21 14:30:10,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-21 14:30:11,056 INFO L129 ointEngineConcurrent]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:11,060 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 1 [2022-09-21 14:30:11,061 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:11,097 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:11,200 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:11,204 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:11,207 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:11,235 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 2 [2022-09-21 14:30:11,235 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for ULTIMATE.start with variables: [q1, q2, q1_front, N, j, q2_back, i, total, f, q2_front, q1_back] [2022-09-21 14:30:11,236 INFO L631 ngineConcurrentUtils]: Start checking 12 possible combinations. [2022-09-21 14:30:11,237 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/12 [2022-09-21 14:30:11,677 INFO L642 ngineConcurrentUtils]: Filter Iteration 2/12 [2022-09-21 14:30:12,135 INFO L642 ngineConcurrentUtils]: Filter Iteration 3/12 [2022-09-21 14:30:12,593 INFO L642 ngineConcurrentUtils]: Filter Iteration 4/12 [2022-09-21 14:30:13,075 INFO L642 ngineConcurrentUtils]: Filter Iteration 5/12 [2022-09-21 14:30:13,532 INFO L642 ngineConcurrentUtils]: Filter Iteration 6/12 [2022-09-21 14:30:14,010 INFO L642 ngineConcurrentUtils]: Filter Iteration 7/12 [2022-09-21 14:30:14,473 INFO L642 ngineConcurrentUtils]: Filter Iteration 8/12 [2022-09-21 14:30:14,998 INFO L642 ngineConcurrentUtils]: Filter Iteration 9/12 [2022-09-21 14:30:15,499 INFO L642 ngineConcurrentUtils]: Filter Iteration 10/12 [2022-09-21 14:30:15,966 INFO L642 ngineConcurrentUtils]: Filter Iteration 11/12 [2022-09-21 14:30:16,479 INFO L642 ngineConcurrentUtils]: Filter Iteration 12/12 [2022-09-21 14:30:16,963 INFO L651 ngineConcurrentUtils]: Number of combinations: 5 [2022-09-21 14:30:16,964 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:16,965 INFO L396 ointEngineConcurrent]: Reduced size from 5 to 2 [2022-09-21 14:30:16,965 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:16,970 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:16,975 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for thread1 with variables: [q1, q2, q1_front, N, j, q2_back, i, total, f, q2_front, q1_back] [2022-09-21 14:30:16,975 INFO L631 ngineConcurrentUtils]: Start checking 1 possible combinations. [2022-09-21 14:30:16,975 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/1 [2022-09-21 14:30:16,975 INFO L646 ngineConcurrentUtils]: contradiction [2022-09-21 14:30:16,976 INFO L651 ngineConcurrentUtils]: Number of combinations: 0 [2022-09-21 14:30:16,976 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:16,976 INFO L396 ointEngineConcurrent]: Reduced size from 0 to 0 [2022-09-21 14:30:16,976 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for thread4 with variables: [q1, q2, q1_front, N, j, q2_back, i, total, f, q2_front, q1_back] [2022-09-21 14:30:16,976 INFO L631 ngineConcurrentUtils]: Start checking 1 possible combinations. [2022-09-21 14:30:16,976 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/1 [2022-09-21 14:30:17,480 INFO L651 ngineConcurrentUtils]: Number of combinations: 1 [2022-09-21 14:30:17,480 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:17,480 INFO L396 ointEngineConcurrent]: Reduced size from 1 to 1 [2022-09-21 14:30:17,481 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:17,491 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for thread3 with variables: [q1, q2, q1_front, N, j, q2_back, i, total, f, q2_front, q1_back] [2022-09-21 14:30:17,491 INFO L631 ngineConcurrentUtils]: Start checking 1 possible combinations. [2022-09-21 14:30:17,491 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/1 [2022-09-21 14:30:18,009 INFO L651 ngineConcurrentUtils]: Number of combinations: 1 [2022-09-21 14:30:18,009 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:18,010 INFO L396 ointEngineConcurrent]: Reduced size from 1 to 1 [2022-09-21 14:30:18,010 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:18,019 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for thread2 with variables: [q1, q2, q1_front, N, j, q2_back, i, total, f, q2_front, q1_back] [2022-09-21 14:30:18,020 INFO L631 ngineConcurrentUtils]: Start checking 1 possible combinations. [2022-09-21 14:30:18,020 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/1 [2022-09-21 14:30:18,020 INFO L646 ngineConcurrentUtils]: contradiction [2022-09-21 14:30:18,020 INFO L651 ngineConcurrentUtils]: Number of combinations: 0 [2022-09-21 14:30:18,020 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:18,020 INFO L396 ointEngineConcurrent]: Reduced size from 0 to 0 [2022-09-21 14:30:18,021 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 3 [2022-09-21 14:30:18,021 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:18,022 INFO L396 ointEngineConcurrent]: Reduced size from 5 to 4 [2022-09-21 14:30:18,022 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:18,027 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:18,032 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:18,037 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:18,041 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:18,041 INFO L396 ointEngineConcurrent]: Reduced size from 0 to 0 [2022-09-21 14:30:18,042 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:18,042 INFO L396 ointEngineConcurrent]: Reduced size from 1 to 1 [2022-09-21 14:30:18,042 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:18,051 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:18,051 INFO L396 ointEngineConcurrent]: Reduced size from 1 to 1 [2022-09-21 14:30:18,051 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:30:18,060 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:30:18,060 INFO L396 ointEngineConcurrent]: Reduced size from 0 to 0 [2022-09-21 14:30:18,065 INFO L320 AbstractInterpreter]: Some error location(s) were reachable [2022-09-21 14:30:18,075 INFO L329 AbstractInterpreter]: No benchmarks available [2022-09-21 14:30:18,075 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2022-09-21 14:30:18,077 INFO L158 Benchmark]: Toolchain (without parser) took 7546.36ms. Allocated memory is still 185.6MB. Free memory was 140.1MB in the beginning and 120.9MB in the end (delta: 19.2MB). Peak memory consumption was 20.4MB. Max. memory is 8.0GB. [2022-09-21 14:30:18,078 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:30:18,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.44ms. Allocated memory is still 185.6MB. Free memory was 140.0MB in the beginning and 138.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-21 14:30:18,080 INFO L158 Benchmark]: Boogie Preprocessor took 17.05ms. Allocated memory is still 185.6MB. Free memory was 138.4MB in the beginning and 137.5MB in the end (delta: 924.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:30:18,081 INFO L158 Benchmark]: RCFGBuilder took 319.20ms. Allocated memory is still 185.6MB. Free memory was 137.3MB in the beginning and 156.9MB in the end (delta: -19.6MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. [2022-09-21 14:30:18,082 INFO L158 Benchmark]: Abstract Interpretation took 7173.68ms. Allocated memory is still 185.6MB. Free memory was 156.9MB in the beginning and 120.9MB in the end (delta: 36.0MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-09-21 14:30:18,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.44ms. Allocated memory is still 185.6MB. Free memory was 140.0MB in the beginning and 138.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.05ms. Allocated memory is still 185.6MB. Free memory was 138.4MB in the beginning and 137.5MB in the end (delta: 924.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 319.20ms. Allocated memory is still 185.6MB. Free memory was 137.3MB in the beginning and 156.9MB in the end (delta: -19.6MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. * Abstract Interpretation took 7173.68ms. Allocated memory is still 185.6MB. Free memory was 156.9MB in the beginning and 120.9MB in the end (delta: 36.0MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 82]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L72] 0 assume N >= 0 && q1_front == q1_back && q2_front == q2_back && total == 0 && i == 0 && j == 0; [L73] FORK 0 fork 1 thread1(); [L74] FORK 0 fork 2, 2 thread2(); [L75] FORK 0 fork 3, 3, 3 thread3(); [L76] FORK 0 fork 4, 4, 4, 4 thread4(); [L77] JOIN 0 join 1; [L78] JOIN 0 join 2, 2; [L79] JOIN 0 join 3, 3, 3; [L80] JOIN 0 join 4, 4, 4, 4; [L81] 0 assume !(total == 0); [L82] 0 assert false; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-09-21 14:30:18,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-21 14:30:18,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...