/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/nonblocking-cntr-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.absint-concur-c9b613c-m [2022-09-21 14:31:29,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-21 14:31:29,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-21 14:31:29,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-21 14:31:29,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-21 14:31:29,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-21 14:31:29,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-21 14:31:29,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-21 14:31:29,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-21 14:31:29,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-21 14:31:29,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-21 14:31:29,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-21 14:31:29,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-21 14:31:29,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-21 14:31:29,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-21 14:31:29,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-21 14:31:29,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-21 14:31:29,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-21 14:31:29,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-21 14:31:29,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-21 14:31:29,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-21 14:31:29,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-21 14:31:29,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-21 14:31:29,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-21 14:31:29,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-21 14:31:29,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-21 14:31:29,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-21 14:31:29,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-21 14:31:29,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-21 14:31:29,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-21 14:31:29,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-21 14:31:29,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-21 14:31:29,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-21 14:31:29,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-21 14:31:29,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-21 14:31:29,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-21 14:31:29,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-21 14:31:29,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-21 14:31:29,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-21 14:31:29,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-21 14:31:29,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-21 14:31:29,777 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 14:31:29,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-21 14:31:29,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-21 14:31:29,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-21 14:31:29,808 INFO L138 SettingsManager]: * Log level for plugins=info [2022-09-21 14:31:29,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-21 14:31:29,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-21 14:31:29,809 INFO L138 SettingsManager]: * User list type=DISABLED [2022-09-21 14:31:29,809 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2022-09-21 14:31:29,809 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2022-09-21 14:31:29,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-09-21 14:31:29,810 INFO L138 SettingsManager]: * Computation of Interferences for Sequential Abstract Interpretation of each procedure=FLOW_SENSITIVE_FILTERED [2022-09-21 14:31:29,810 INFO L138 SettingsManager]: * Abstract domain=OctagonDomain [2022-09-21 14:31:29,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-21 14:31:29,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-21 14:31:29,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-21 14:31:29,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-21 14:31:29,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-21 14:31:29,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-21 14:31:29,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-21 14:31:29,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-21 14:31:29,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-21 14:31:29,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-21 14:31:29,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-21 14:31:29,813 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2022-09-21 14:31:29,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-21 14:31:29,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-21 14:31:29,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-21 14:31:29,813 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-09-21 14:31:29,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-21 14:31:29,814 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2022-09-21 14:31:29,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-21 14:31:29,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-21 14:31:30,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-21 14:31:30,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-21 14:31:30,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-21 14:31:30,044 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-21 14:31:30,046 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-21 14:31:30,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr-alt.wvr.bpl [2022-09-21 14:31:30,047 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr-alt.wvr.bpl' [2022-09-21 14:31:30,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-21 14:31:30,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-21 14:31:30,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-21 14:31:30,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-21 14:31:30,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-21 14:31:30,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,100 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-21 14:31:30,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-21 14:31:30,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-21 14:31:30,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-21 14:31:30,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-21 14:31:30,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-21 14:31:30,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-21 14:31:30,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-21 14:31:30,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-21 14:31:30,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-21 14:31:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-21 14:31:30,145 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 14:31:30,166 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 14:31:30,177 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-09-21 14:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-21 14:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-21 14:31:30,178 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-09-21 14:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-21 14:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-21 14:31:30,178 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-21 14:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-21 14:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-21 14:31:30,179 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 14:31:30,216 INFO L234 CfgBuilder]: Building ICFG [2022-09-21 14:31:30,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-21 14:31:30,278 INFO L275 CfgBuilder]: Performing block encoding [2022-09-21 14:31:30,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-21 14:31:30,291 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-21 14:31:30,293 INFO L202 PluginConnector]: Adding new model nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 02:31:30 BoogieIcfgContainer [2022-09-21 14:31:30,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-21 14:31:30,294 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2022-09-21 14:31:30,294 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2022-09-21 14:31:30,294 INFO L275 PluginConnector]: Abstract Interpretation initialized [2022-09-21 14:31:30,295 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 02:31:30" (1/1) ... [2022-09-21 14:31:30,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-21 14:31:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-21 14:31:30,351 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 14:31:30,358 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 14:31:30,405 INFO L129 ointEngineConcurrent]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:30,406 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 1 [2022-09-21 14:31:30,407 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:30,447 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:30,504 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:30,517 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 2 [2022-09-21 14:31:30,517 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for ULTIMATE.start with variables: [j2, j1, M1, M2, counter] [2022-09-21 14:31:30,519 INFO L631 ngineConcurrentUtils]: Start checking 12 possible combinations. [2022-09-21 14:31:30,519 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/12 [2022-09-21 14:31:30,765 INFO L642 ngineConcurrentUtils]: Filter Iteration 2/12 [2022-09-21 14:31:31,051 INFO L642 ngineConcurrentUtils]: Filter Iteration 3/12 [2022-09-21 14:31:31,360 INFO L642 ngineConcurrentUtils]: Filter Iteration 4/12 [2022-09-21 14:31:31,607 INFO L642 ngineConcurrentUtils]: Filter Iteration 5/12 [2022-09-21 14:31:31,886 INFO L642 ngineConcurrentUtils]: Filter Iteration 6/12 [2022-09-21 14:31:32,145 INFO L642 ngineConcurrentUtils]: Filter Iteration 7/12 [2022-09-21 14:31:32,413 INFO L642 ngineConcurrentUtils]: Filter Iteration 8/12 [2022-09-21 14:31:32,714 INFO L642 ngineConcurrentUtils]: Filter Iteration 9/12 [2022-09-21 14:31:33,012 INFO L642 ngineConcurrentUtils]: Filter Iteration 10/12 [2022-09-21 14:31:33,302 INFO L642 ngineConcurrentUtils]: Filter Iteration 11/12 [2022-09-21 14:31:33,588 INFO L642 ngineConcurrentUtils]: Filter Iteration 12/12 [2022-09-21 14:31:33,904 INFO L651 ngineConcurrentUtils]: Number of combinations: 5 [2022-09-21 14:31:33,907 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:31:33,908 INFO L396 ointEngineConcurrent]: Reduced size from 5 to 5 [2022-09-21 14:31:33,908 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:33,919 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:33,930 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:33,936 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:33,942 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:31:33,961 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for thread1 with variables: [j2, j1, M1, M2, counter] [2022-09-21 14:31:33,961 INFO L631 ngineConcurrentUtils]: Start checking 1 possible combinations. [2022-09-21 14:31:33,961 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/1 [2022-09-21 14:31:33,962 INFO L646 ngineConcurrentUtils]: contradiction [2022-09-21 14:31:33,962 INFO L651 ngineConcurrentUtils]: Number of combinations: 0 [2022-09-21 14:31:33,962 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:31:33,962 INFO L396 ointEngineConcurrent]: Reduced size from 0 to 0 [2022-09-21 14:31:33,962 INFO L596 ngineConcurrentUtils]: Cross Product Computation started for thread2 with variables: [j2, j1, M1, M2, counter] [2022-09-21 14:31:33,962 INFO L631 ngineConcurrentUtils]: Start checking 1 possible combinations. [2022-09-21 14:31:33,962 INFO L642 ngineConcurrentUtils]: Filter Iteration 1/1 [2022-09-21 14:31:33,963 INFO L646 ngineConcurrentUtils]: contradiction [2022-09-21 14:31:33,963 INFO L651 ngineConcurrentUtils]: Number of combinations: 0 [2022-09-21 14:31:33,963 INFO L379 ointEngineConcurrent]: Reducing to supersets [2022-09-21 14:31:33,963 INFO L396 ointEngineConcurrent]: Reduced size from 0 to 0 [2022-09-21 14:31:33,967 INFO L320 AbstractInterpreter]: Some error location(s) were reachable [2022-09-21 14:31:33,977 INFO L329 AbstractInterpreter]: No benchmarks available [2022-09-21 14:31:33,977 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2022-09-21 14:31:33,979 INFO L158 Benchmark]: Toolchain (without parser) took 3911.26ms. Allocated memory was 199.2MB in the beginning and 312.5MB in the end (delta: 113.2MB). Free memory was 151.6MB in the beginning and 273.1MB in the end (delta: -121.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:31:33,980 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 199.2MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:31:33,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.44ms. Allocated memory is still 199.2MB. Free memory was 151.5MB in the beginning and 150.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:31:33,981 INFO L158 Benchmark]: Boogie Preprocessor took 11.02ms. Allocated memory is still 199.2MB. Free memory was 150.0MB in the beginning and 149.1MB in the end (delta: 930.1kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-21 14:31:33,984 INFO L158 Benchmark]: RCFGBuilder took 178.15ms. Allocated memory is still 199.2MB. Free memory was 149.0MB in the beginning and 139.9MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-09-21 14:31:33,985 INFO L158 Benchmark]: Abstract Interpretation took 3683.32ms. Allocated memory was 199.2MB in the beginning and 312.5MB in the end (delta: 113.2MB). Free memory was 139.8MB in the beginning and 273.1MB in the end (delta: -133.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:31:33,988 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 0.11ms. Allocated memory is still 199.2MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.44ms. Allocated memory is still 199.2MB. Free memory was 151.5MB in the beginning and 150.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 11.02ms. Allocated memory is still 199.2MB. Free memory was 150.0MB in the beginning and 149.1MB in the end (delta: 930.1kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 178.15ms. Allocated memory is still 199.2MB. Free memory was 149.0MB in the beginning and 139.9MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Abstract Interpretation took 3683.32ms. Allocated memory was 199.2MB in the beginning and 312.5MB in the end (delta: 113.2MB). Free memory was 139.8MB in the beginning and 273.1MB in the end (delta: -133.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 50]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L40] 0 assume j1 == 0; [L41] 0 assume j2 == 0; [L42] 0 assume counter == 0; [L43] 0 assume 0 < M1; [L44] 0 assume 0 < M2; [L45] FORK 0 fork 1 thread1(); [L46] FORK 0 fork 2, 2 thread2(); [L47] JOIN 0 join 1; [L48] JOIN 0 join 2, 2; [L49] 0 assume !(counter == M1 - M2); [L50] 0 assert false; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-09-21 14:31:34,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-21 14:31:34,247 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...