java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-11 17:03:33,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-11 17:03:33,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-11 17:03:33,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-11 17:03:33,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-11 17:03:33,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-11 17:03:33,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-11 17:03:33,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-11 17:03:33,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-11 17:03:33,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-11 17:03:33,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-11 17:03:33,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-11 17:03:33,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-11 17:03:33,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-11 17:03:33,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-11 17:03:33,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-11 17:03:33,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-11 17:03:33,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-11 17:03:33,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-11 17:03:33,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-11 17:03:33,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-11 17:03:33,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-11 17:03:33,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-11 17:03:33,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-11 17:03:33,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-11 17:03:33,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-11 17:03:33,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-11 17:03:33,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-11 17:03:33,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-11 17:03:33,278 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-11 17:03:33,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-11 17:03:33,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-11 17:03:33,279 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-11 17:03:33,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-11 17:03:33,280 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-11 17:03:33,280 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-11 17:03:33,281 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-11 17:03:33,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-11 17:03:33,281 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-11 17:03:33,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-11 17:03:33,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-11 17:03:33,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-11 17:03:33,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-11 17:03:33,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-11 17:03:33,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-11 17:03:33,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-11 17:03:33,283 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-11 17:03:33,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-11 17:03:33,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-11 17:03:33,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-11 17:03:33,284 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-11 17:03:33,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-11 17:03:33,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-11 17:03:33,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-11 17:03:33,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-11 17:03:33,285 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-11 17:03:33,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-11 17:03:33,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-11 17:03:33,286 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-11 17:03:33,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-11 17:03:33,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-11 17:03:33,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-11 17:03:33,342 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-11 17:03:33,343 INFO L275 PluginConnector]: CDTParser initialized [2019-09-11 17:03:33,344 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2019-09-11 17:03:33,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c596976f/c690aeffbcb7490c8b113521fab66f11/FLAG10cbdc8dd [2019-09-11 17:03:33,935 INFO L306 CDTParser]: Found 1 translation units. [2019-09-11 17:03:33,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2019-09-11 17:03:33,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c596976f/c690aeffbcb7490c8b113521fab66f11/FLAG10cbdc8dd [2019-09-11 17:03:34,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c596976f/c690aeffbcb7490c8b113521fab66f11 [2019-09-11 17:03:34,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-11 17:03:34,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-11 17:03:34,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-11 17:03:34,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-11 17:03:34,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-11 17:03:34,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f9c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34, skipping insertion in model container [2019-09-11 17:03:34,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,292 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-11 17:03:34,353 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-11 17:03:34,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 17:03:34,730 INFO L188 MainTranslator]: Completed pre-run [2019-09-11 17:03:34,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 17:03:34,842 INFO L192 MainTranslator]: Completed translation [2019-09-11 17:03:34,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34 WrapperNode [2019-09-11 17:03:34,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-11 17:03:34,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-11 17:03:34,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-11 17:03:34,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-11 17:03:34,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (1/1) ... [2019-09-11 17:03:34,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-11 17:03:34,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-11 17:03:34,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-11 17:03:34,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-11 17:03:34,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 05:03:34" (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 [2019-09-11 17:03:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-11 17:03:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-11 17:03:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-11 17:03:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-11 17:03:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-11 17:03:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-11 17:03:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-11 17:03:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-11 17:03:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-11 17:03:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-11 17:03:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-11 17:03:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-11 17:03:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-11 17:03:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-11 17:03:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-11 17:03:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-11 17:03:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-11 17:03:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-11 17:03:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-11 17:03:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-11 17:03:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-11 17:03:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-11 17:03:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-11 17:03:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-11 17:03:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-11 17:03:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-11 17:03:35,638 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-11 17:03:35,638 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-11 17:03:35,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:03:35 BoogieIcfgContainer [2019-09-11 17:03:35,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-11 17:03:35,641 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-11 17:03:35,641 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-11 17:03:35,641 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-11 17:03:35,642 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 05:03:35" (1/1) ... [2019-09-11 17:03:35,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-11 17:03:35,824 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-11 17:03:41,809 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-11 17:03:41,848 INFO L272 AbstractInterpreter]: Visited 193 different actions 5546 times. Merged at 57 different actions 1750 times. Widened at 1 different actions 9 times. Performed 33793 root evaluator evaluations with a maximum evaluation depth of 6. Performed 33793 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1151 fixpoints after 66 different actions. Largest state had 107 variables. [2019-09-11 17:03:41,848 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-11 17:03:41,851 INFO L168 Benchmark]: Toolchain (without parser) took 7575.82 ms. Allocated memory was 144.2 MB in the beginning and 421.0 MB in the end (delta: 276.8 MB). Free memory was 91.8 MB in the beginning and 200.5 MB in the end (delta: -108.7 MB). Peak memory consumption was 168.1 MB. Max. memory is 7.1 GB. [2019-09-11 17:03:41,853 INFO L168 Benchmark]: CDTParser took 1.35 ms. Allocated memory is still 144.2 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-11 17:03:41,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.66 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 91.6 MB in the beginning and 174.6 MB in the end (delta: -83.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2019-09-11 17:03:41,856 INFO L168 Benchmark]: Boogie Preprocessor took 72.66 ms. Allocated memory is still 200.3 MB. Free memory was 174.6 MB in the beginning and 172.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-09-11 17:03:41,858 INFO L168 Benchmark]: RCFGBuilder took 723.43 ms. Allocated memory is still 200.3 MB. Free memory was 171.4 MB in the beginning and 131.0 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2019-09-11 17:03:41,860 INFO L168 Benchmark]: Abstract Interpretation took 6207.70 ms. Allocated memory was 200.3 MB in the beginning and 421.0 MB in the end (delta: 220.7 MB). Free memory was 130.4 MB in the beginning and 200.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2019-09-11 17:03:41,864 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35 ms. Allocated memory is still 144.2 MB. Free memory was 110.6 MB in the beginning and 110.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 567.66 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 91.6 MB in the beginning and 174.6 MB in the end (delta: -83.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.66 ms. Allocated memory is still 200.3 MB. Free memory was 174.6 MB in the beginning and 172.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 723.43 ms. Allocated memory is still 200.3 MB. Free memory was 171.4 MB in the beginning and 131.0 MB in the end (delta: 40.5 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 6207.70 ms. Allocated memory was 200.3 MB in the beginning and 421.0 MB in the end (delta: 220.7 MB). Free memory was 130.4 MB in the beginning and 200.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 435]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: abstract domain could reach this error location. Possible FailurePath: [L70] msg_t nomsg = (msg_t )-1; [L71] char r1 ; [L72] port_t p1 ; [L73] char p1_old ; [L74] char p1_new ; [L75] char id1 ; [L76] char st1 ; [L77] msg_t send1 ; [L78] _Bool mode1 ; [L79] _Bool alive1 ; [L80] port_t p2 ; [L81] char p2_old ; [L82] char p2_new ; [L83] char id2 ; [L84] char st2 ; [L85] msg_t send2 ; [L86] _Bool mode2 ; [L87] _Bool alive2 ; [L88] port_t p3 ; [L89] char p3_old ; [L90] char p3_new ; [L91] char id3 ; [L92] char st3 ; [L93] msg_t send3 ; [L94] _Bool mode3 ; [L95] _Bool alive3 ; [L96] port_t p4 ; [L97] char p4_old ; [L98] char p4_new ; [L99] char id4 ; [L100] char st4 ; [L101] msg_t send4 ; [L102] _Bool mode4 ; [L103] _Bool alive4 ; [L241] void (*nodes[4])(void) = { & node1, & node2, & node3, & node4}; [L369] int c1 ; [L370] int i2 ; [L373] c1 = 0 [L374] r1 = __VERIFIER_nondet_char() [L375] id1 = __VERIFIER_nondet_char() [L376] st1 = __VERIFIER_nondet_char() [L377] send1 = __VERIFIER_nondet_char() [L378] mode1 = __VERIFIER_nondet_bool() [L379] alive1 = __VERIFIER_nondet_bool() [L380] id2 = __VERIFIER_nondet_char() [L381] st2 = __VERIFIER_nondet_char() [L382] send2 = __VERIFIER_nondet_char() [L383] mode2 = __VERIFIER_nondet_bool() [L384] alive2 = __VERIFIER_nondet_bool() [L385] id3 = __VERIFIER_nondet_char() [L386] st3 = __VERIFIER_nondet_char() [L387] send3 = __VERIFIER_nondet_char() [L388] mode3 = __VERIFIER_nondet_bool() [L389] alive3 = __VERIFIER_nondet_bool() [L390] id4 = __VERIFIER_nondet_char() [L391] st4 = __VERIFIER_nondet_char() [L392] send4 = __VERIFIER_nondet_char() [L393] mode4 = __VERIFIER_nondet_bool() [L394] alive4 = __VERIFIER_nondet_bool() [L395] CALL, EXPR init() [L244] int tmp ; [L247] COND TRUE (int )r1 == 0 [L248] COND TRUE (((int )alive1 + (int )alive2) + (int )alive3) + (int )alive4 >= 1 [L249] COND TRUE (int )id1 >= 0 [L250] COND TRUE (int )st1 == 0 [L251] COND TRUE (int )send1 == (int )id1 [L252] COND TRUE (int )mode1 == 0 [L253] COND TRUE (int )id2 >= 0 [L254] COND TRUE (int )st2 == 0 [L255] COND TRUE (int )send2 == (int )id2 [L256] COND TRUE (int )mode2 == 0 [L257] COND TRUE (int )id3 >= 0 [L258] COND TRUE (int )st3 == 0 [L259] COND TRUE (int )send3 == (int )id3 [L260] COND TRUE (int )mode3 == 0 [L261] COND TRUE (int )id4 >= 0 [L262] COND TRUE (int )st4 == 0 [L263] COND TRUE (int )send4 == (int )id4 [L264] COND TRUE (int )mode4 == 0 [L265] COND TRUE (int )id1 != (int )id2 [L266] COND TRUE (int )id1 != (int )id3 [L267] COND TRUE (int )id1 != (int )id4 [L268] COND TRUE (int )id2 != (int )id3 [L269] COND TRUE (int )id2 != (int )id4 [L270] COND TRUE (int )id3 != (int )id4 [L271] tmp = 1 [L344] return (tmp); [L395] RET, EXPR init() [L395] i2 = init() [L397] p1_old = nomsg [L398] p1_new = nomsg [L399] p2_old = nomsg [L400] p2_new = nomsg [L401] p3_old = nomsg [L402] p3_new = nomsg [L403] p4_old = nomsg [L404] p4_new = nomsg [L405] i2 = 0 [L406] COND TRUE i2 < 8 [L408] CALL node1() [L106] msg_t m1 ; [L109] m1 = nomsg [L110] COND TRUE \read(mode1) [L111] r1 = (char )((int )r1 + 1) [L112] m1 = p4_old [L113] p4_old = nomsg [L114] COND FALSE !((int )m1 != (int )nomsg) [L126] mode1 = (_Bool)0 [L408] RET node1() [L409] CALL node2() [L141] msg_t m2 ; [L144] m2 = nomsg [L145] COND TRUE \read(mode2) [L146] m2 = p1_old [L147] p1_old = nomsg [L148] COND FALSE !((int )m2 != (int )nomsg) [L160] mode2 = (_Bool)0 [L409] RET node2() [L410] CALL node3() [L175] msg_t m3 ; [L178] m3 = nomsg [L179] COND TRUE \read(mode3) [L180] m3 = p2_old [L181] p2_old = nomsg [L182] COND FALSE !((int )m3 != (int )nomsg) [L194] mode3 = (_Bool)0 [L410] RET node3() [L411] CALL node4() [L209] msg_t m4 ; [L212] m4 = nomsg [L213] COND TRUE \read(mode4) [L214] m4 = p3_old [L215] p3_old = nomsg [L216] COND FALSE !((int )m4 != (int )nomsg) [L228] mode4 = (_Bool)0 [L411] RET node4() [L412] p1_old = p1_new [L413] p1_new = nomsg [L414] p2_old = p2_new [L415] p2_new = nomsg [L416] p3_old = p3_new [L417] p3_new = nomsg [L418] p4_old = p4_new [L419] p4_new = nomsg [L420] CALL, EXPR check() [L349] int tmp ; [L352] COND FALSE !((((int )st1 + (int )st2) + (int )st3) + (int )st4 <= 1) [L362] tmp = 0 [L364] return (tmp); [L420] RET, EXPR check() [L420] c1 = check() [L421] CALL assert(c1) [L433] COND TRUE ! arg [L435] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...