./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix031.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix031.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5191c614040da54c6fe77b0fb4d91d943009a345a9252a69568f58113a0aaaf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:56:49,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:56:50,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:56:50,027 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:56:50,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:56:50,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:56:50,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:56:50,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:56:50,051 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:56:50,052 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:56:50,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:56:50,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:56:50,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:56:50,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:56:50,054 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:56:50,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:56:50,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:56:50,056 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:56:50,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:56:50,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:56:50,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:56:50,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:56:50,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:56:50,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:56:50,059 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:56:50,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:56:50,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:56:50,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:56:50,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:56:50,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:56:50,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:56:50,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:56:50,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:56:50,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:56:50,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:56:50,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:56:50,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:56:50,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:56:50,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:56:50,063 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:56:50,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:56:50,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:56:50,063 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5191c614040da54c6fe77b0fb4d91d943009a345a9252a69568f58113a0aaaf [2023-11-28 23:56:50,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:56:50,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:56:50,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:56:50,288 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:56:50,288 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:56:50,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/mix031.oepc.i [2023-11-28 23:56:53,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:56:53,221 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:56:53,221 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/sv-benchmarks/c/pthread-wmm/mix031.oepc.i [2023-11-28 23:56:53,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/data/5c1ebfa84/a66dae7d830f47cba5512942c854d39e/FLAG429658177 [2023-11-28 23:56:53,251 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/data/5c1ebfa84/a66dae7d830f47cba5512942c854d39e [2023-11-28 23:56:53,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:56:53,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:56:53,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:56:53,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:56:53,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:56:53,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88dfbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53, skipping insertion in model container [2023-11-28 23:56:53,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:56:53,434 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/sv-benchmarks/c/pthread-wmm/mix031.oepc.i[945,958] [2023-11-28 23:56:53,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:56:53,619 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:56:53,631 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/sv-benchmarks/c/pthread-wmm/mix031.oepc.i[945,958] [2023-11-28 23:56:53,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:56:53,706 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:56:53,706 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:56:53,714 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:56:53,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53 WrapperNode [2023-11-28 23:56:53,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:56:53,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:56:53,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:56:53,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:56:53,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,766 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2023-11-28 23:56:53,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:56:53,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:56:53,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:56:53,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:56:53,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,801 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-28 23:56:53,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:56:53,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:56:53,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:56:53,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:56:53,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (1/1) ... [2023-11-28 23:56:53,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:56:53,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:53,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:56:53,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:56:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:56:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:56:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:56:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 23:56:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:56:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:56:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:56:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-28 23:56:53,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-28 23:56:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-28 23:56:53,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-28 23:56:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:56:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:56:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:56:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 23:56:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:56:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:56:53,885 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:56:54,005 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:56:54,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:56:54,234 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:56:54,411 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:56:54,411 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 23:56:54,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:54 BoogieIcfgContainer [2023-11-28 23:56:54,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:56:54,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:56:54,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:56:54,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:56:54,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:56:53" (1/3) ... [2023-11-28 23:56:54,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d30356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:54, skipping insertion in model container [2023-11-28 23:56:54,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:56:53" (2/3) ... [2023-11-28 23:56:54,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d30356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:56:54, skipping insertion in model container [2023-11-28 23:56:54,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:54" (3/3) ... [2023-11-28 23:56:54,420 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.oepc.i [2023-11-28 23:56:54,426 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:56:54,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:56:54,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-28 23:56:54,434 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:56:54,467 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:56:54,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 34 transitions, 76 flow [2023-11-28 23:56:54,516 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-11-28 23:56:54,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:56:54,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 1/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-11-28 23:56:54,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 34 transitions, 76 flow [2023-11-28 23:56:54,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 70 flow [2023-11-28 23:56:54,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:56:54,538 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10bec4ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:56:54,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-28 23:56:54,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:56:54,542 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-28 23:56:54,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:56:54,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:54,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-28 23:56:54,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 23:56:54,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 10211705, now seen corresponding path program 1 times [2023-11-28 23:56:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:54,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353953145] [2023-11-28 23:56:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:54,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:54,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353953145] [2023-11-28 23:56:54,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353953145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:54,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:54,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:56:54,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805732483] [2023-11-28 23:56:54,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:54,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:56:54,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:54,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:56:54,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:56:54,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 34 [2023-11-28 23:56:54,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:54,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:54,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 34 [2023-11-28 23:56:54,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:55,074 INFO L124 PetriNetUnfolderBase]: 135/311 cut-off events. [2023-11-28 23:56:55,075 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-28 23:56:55,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 311 events. 135/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1506 event pairs, 51 based on Foata normal form. 15/319 useless extension candidates. Maximal degree in co-relation 555. Up to 199 conditions per place. [2023-11-28 23:56:55,081 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 21 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2023-11-28 23:56:55,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 139 flow [2023-11-28 23:56:55,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:56:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:56:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2023-11-28 23:56:55,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7745098039215687 [2023-11-28 23:56:55,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 79 transitions. [2023-11-28 23:56:55,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 79 transitions. [2023-11-28 23:56:55,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:55,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 79 transitions. [2023-11-28 23:56:55,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,103 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 70 flow. Second operand 3 states and 79 transitions. [2023-11-28 23:56:55,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 139 flow [2023-11-28 23:56:55,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:56:55,108 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 66 flow [2023-11-28 23:56:55,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-28 23:56:55,112 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2023-11-28 23:56:55,112 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 66 flow [2023-11-28 23:56:55,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:55,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:55,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:56:55,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 23:56:55,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1627807975, now seen corresponding path program 1 times [2023-11-28 23:56:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783838051] [2023-11-28 23:56:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783838051] [2023-11-28 23:56:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783838051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:55,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:56:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163783848] [2023-11-28 23:56:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:56:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:56:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:55,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2023-11-28 23:56:55,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:55,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2023-11-28 23:56:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:55,493 INFO L124 PetriNetUnfolderBase]: 176/406 cut-off events. [2023-11-28 23:56:55,493 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-28 23:56:55,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 406 events. 176/406 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2013 event pairs, 38 based on Foata normal form. 25/401 useless extension candidates. Maximal degree in co-relation 763. Up to 153 conditions per place. [2023-11-28 23:56:55,497 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 30 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-11-28 23:56:55,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 178 flow [2023-11-28 23:56:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:56:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-28 23:56:55,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6838235294117647 [2023-11-28 23:56:55,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-28 23:56:55,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-28 23:56:55,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:55,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-28 23:56:55,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,504 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 66 flow. Second operand 4 states and 93 transitions. [2023-11-28 23:56:55,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 178 flow [2023-11-28 23:56:55,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:56:55,506 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 88 flow [2023-11-28 23:56:55,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-11-28 23:56:55,507 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-11-28 23:56:55,508 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 88 flow [2023-11-28 23:56:55,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:55,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:55,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:56:55,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 23:56:55,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1390873600, now seen corresponding path program 1 times [2023-11-28 23:56:55,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:55,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889122758] [2023-11-28 23:56:55,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:55,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:55,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:55,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889122758] [2023-11-28 23:56:55,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889122758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:55,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:55,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:56:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001876256] [2023-11-28 23:56:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:55,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:56:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:56:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:55,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2023-11-28 23:56:55,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:55,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2023-11-28 23:56:55,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:55,858 INFO L124 PetriNetUnfolderBase]: 98/223 cut-off events. [2023-11-28 23:56:55,858 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-28 23:56:55,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 223 events. 98/223 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 787 event pairs, 26 based on Foata normal form. 16/224 useless extension candidates. Maximal degree in co-relation 500. Up to 86 conditions per place. [2023-11-28 23:56:55,860 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 25 selfloop transitions, 6 changer transitions 1/44 dead transitions. [2023-11-28 23:56:55,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 183 flow [2023-11-28 23:56:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:56:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:56:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2023-11-28 23:56:55,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611764705882353 [2023-11-28 23:56:55,863 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2023-11-28 23:56:55,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2023-11-28 23:56:55,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:55,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2023-11-28 23:56:55,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,866 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 88 flow. Second operand 5 states and 104 transitions. [2023-11-28 23:56:55,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 183 flow [2023-11-28 23:56:55,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-28 23:56:55,869 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 104 flow [2023-11-28 23:56:55,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-11-28 23:56:55,870 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-11-28 23:56:55,870 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 104 flow [2023-11-28 23:56:55,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:55,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:55,871 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-28 23:56:55,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:56:55,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 23:56:55,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1216131172, now seen corresponding path program 1 times [2023-11-28 23:56:55,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:55,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854217208] [2023-11-28 23:56:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:55,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:56,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854217208] [2023-11-28 23:56:56,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854217208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:56,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:56,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:56:56,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096279392] [2023-11-28 23:56:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:56,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:56:56,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:56:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:56:56,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2023-11-28 23:56:56,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:56,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:56,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2023-11-28 23:56:56,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:56,778 INFO L124 PetriNetUnfolderBase]: 172/394 cut-off events. [2023-11-28 23:56:56,779 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-28 23:56:56,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 394 events. 172/394 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1698 event pairs, 45 based on Foata normal form. 4/386 useless extension candidates. Maximal degree in co-relation 888. Up to 135 conditions per place. [2023-11-28 23:56:56,781 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 31 selfloop transitions, 11 changer transitions 17/71 dead transitions. [2023-11-28 23:56:56,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 320 flow [2023-11-28 23:56:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:56:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:56:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2023-11-28 23:56:56,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-11-28 23:56:56,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 168 transitions. [2023-11-28 23:56:56,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 168 transitions. [2023-11-28 23:56:56,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:56,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 168 transitions. [2023-11-28 23:56:56,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:56,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:56,788 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:56,788 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 104 flow. Second operand 9 states and 168 transitions. [2023-11-28 23:56:56,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 320 flow [2023-11-28 23:56:56,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 280 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-28 23:56:56,792 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 151 flow [2023-11-28 23:56:56,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=151, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-11-28 23:56:56,793 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-28 23:56:56,793 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 151 flow [2023-11-28 23:56:56,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:56,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:56,794 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-28 23:56:56,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:56:56,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 23:56:56,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:56,795 INFO L85 PathProgramCache]: Analyzing trace with hash 388517474, now seen corresponding path program 2 times [2023-11-28 23:56:56,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:56,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048573178] [2023-11-28 23:56:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:56,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:56:56,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:56:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:56:56,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:56:56,918 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:56:56,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-28 23:56:56,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-28 23:56:56,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-28 23:56:56,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-28 23:56:56,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-28 23:56:56,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:56:56,922 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-28 23:56:56,927 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 23:56:56,927 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:56:56,964 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-28 23:56:56,966 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-28 23:56:56,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:56:56 BasicIcfg [2023-11-28 23:56:56,991 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:56:56,992 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:56:56,992 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:56:56,992 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:56:56,993 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:56:54" (3/4) ... [2023-11-28 23:56:56,993 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-28 23:56:57,012 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-28 23:56:57,013 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-28 23:56:57,078 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:56:57,079 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:56:57,079 INFO L158 Benchmark]: Toolchain (without parser) took 3825.01ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 119.3MB in the beginning and 138.6MB in the end (delta: -19.3MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-11-28 23:56:57,080 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:56:57,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.70ms. Allocated memory is still 159.4MB. Free memory was 118.8MB in the beginning and 95.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-28 23:56:57,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.16ms. Allocated memory is still 159.4MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:56:57,081 INFO L158 Benchmark]: Boogie Preprocessor took 52.37ms. Allocated memory is still 159.4MB. Free memory was 93.7MB in the beginning and 90.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:56:57,081 INFO L158 Benchmark]: RCFGBuilder took 591.30ms. Allocated memory is still 159.4MB. Free memory was 90.0MB in the beginning and 113.3MB in the end (delta: -23.3MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2023-11-28 23:56:57,082 INFO L158 Benchmark]: TraceAbstraction took 2577.04ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 112.4MB in the beginning and 149.1MB in the end (delta: -36.7MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. [2023-11-28 23:56:57,082 INFO L158 Benchmark]: Witness Printer took 86.78ms. Allocated memory is still 201.3MB. Free memory was 149.1MB in the beginning and 138.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 23:56:57,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.70ms. Allocated memory is still 159.4MB. Free memory was 118.8MB in the beginning and 95.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.16ms. Allocated memory is still 159.4MB. Free memory was 95.8MB in the beginning and 93.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.37ms. Allocated memory is still 159.4MB. Free memory was 93.7MB in the beginning and 90.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 591.30ms. Allocated memory is still 159.4MB. Free memory was 90.0MB in the beginning and 113.3MB in the end (delta: -23.3MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2577.04ms. Allocated memory was 159.4MB in the beginning and 201.3MB in the end (delta: 41.9MB). Free memory was 112.4MB in the beginning and 149.1MB in the end (delta: -36.7MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. * Witness Printer took 86.78ms. Allocated memory is still 201.3MB. Free memory was 149.1MB in the beginning and 138.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p0_EBX = 0; [L714] 0 int __unbuffered_p1_EAX = 0; [L716] 0 int __unbuffered_p1_EBX = 0; [L718] 0 int a = 0; [L719] 0 _Bool a$flush_delayed; [L720] 0 int a$mem_tmp; [L721] 0 _Bool a$r_buff0_thd0; [L722] 0 _Bool a$r_buff0_thd1; [L723] 0 _Bool a$r_buff0_thd2; [L724] 0 _Bool a$r_buff1_thd0; [L725] 0 _Bool a$r_buff1_thd1; [L726] 0 _Bool a$r_buff1_thd2; [L727] 0 _Bool a$read_delayed; [L728] 0 int *a$read_delayed_var; [L729] 0 int a$w_buff0; [L730] 0 _Bool a$w_buff0_used; [L731] 0 int a$w_buff1; [L732] 0 _Bool a$w_buff1_used; [L733] 0 _Bool main$tmp_guard0; [L734] 0 _Bool main$tmp_guard1; [L736] 0 int x = 0; [L738] 0 int y = 0; [L740] 0 int z = 0; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L827] 0 pthread_t t833; [L828] FCALL, FORK 0 pthread_create(&t833, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, t833={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L829] 0 pthread_t t834; [L830] FCALL, FORK 0 pthread_create(&t834, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t833={5:0}, t834={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L746] 1 a$w_buff1 = a$w_buff0 [L747] 1 a$w_buff0 = 1 [L748] 1 a$w_buff1_used = a$w_buff0_used [L749] 1 a$w_buff0_used = (_Bool)1 [L750] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L750] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L751] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L752] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L753] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L754] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L757] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0] [L760] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0] [L763] 1 __unbuffered_p0_EBX = y VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0] [L780] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=0] [L783] 2 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=1] [L786] 2 __unbuffered_p1_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, z=1] [L789] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L790] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L791] 2 a$flush_delayed = weak$$choice2 [L792] 2 a$mem_tmp = a [L793] 2 a = !a$w_buff0_used || !a$r_buff0_thd2 && !a$w_buff1_used || !a$r_buff0_thd2 && !a$r_buff1_thd2 ? a : (a$w_buff0_used && a$r_buff0_thd2 ? a$w_buff0 : a$w_buff1) [L794] 2 a$w_buff0 = weak$$choice2 ? a$w_buff0 : (!a$w_buff0_used || !a$r_buff0_thd2 && !a$w_buff1_used || !a$r_buff0_thd2 && !a$r_buff1_thd2 ? a$w_buff0 : (a$w_buff0_used && a$r_buff0_thd2 ? a$w_buff0 : a$w_buff0)) [L795] 2 a$w_buff1 = weak$$choice2 ? a$w_buff1 : (!a$w_buff0_used || !a$r_buff0_thd2 && !a$w_buff1_used || !a$r_buff0_thd2 && !a$r_buff1_thd2 ? a$w_buff1 : (a$w_buff0_used && a$r_buff0_thd2 ? a$w_buff1 : a$w_buff1)) [L796] 2 a$w_buff0_used = weak$$choice2 ? a$w_buff0_used : (!a$w_buff0_used || !a$r_buff0_thd2 && !a$w_buff1_used || !a$r_buff0_thd2 && !a$r_buff1_thd2 ? a$w_buff0_used : (a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$w_buff0_used)) [L797] 2 a$w_buff1_used = weak$$choice2 ? a$w_buff1_used : (!a$w_buff0_used || !a$r_buff0_thd2 && !a$w_buff1_used || !a$r_buff0_thd2 && !a$r_buff1_thd2 ? a$w_buff1_used : (a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L798] 2 a$r_buff0_thd2 = weak$$choice2 ? a$r_buff0_thd2 : (!a$w_buff0_used || !a$r_buff0_thd2 && !a$w_buff1_used || !a$r_buff0_thd2 && !a$r_buff1_thd2 ? a$r_buff0_thd2 : (a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$r_buff0_thd2)) [L799] 2 a$r_buff1_thd2 = weak$$choice2 ? a$r_buff1_thd2 : (!a$w_buff0_used || !a$r_buff0_thd2 && !a$w_buff1_used || !a$r_buff0_thd2 && !a$r_buff1_thd2 ? a$r_buff1_thd2 : (a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L800] 2 __unbuffered_p1_EBX = a [L801] 2 a = a$flush_delayed ? a$mem_tmp : a [L802] 2 a$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=1, y=1, z=1] [L805] 2 a = a$w_buff0_used && a$r_buff0_thd2 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd2 ? a$w_buff1 : a) [L806] 2 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$w_buff0_used [L807] 2 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd2 || a$w_buff1_used && a$r_buff1_thd2 ? (_Bool)0 : a$w_buff1_used [L808] 2 a$r_buff0_thd2 = a$w_buff0_used && a$r_buff0_thd2 ? (_Bool)0 : a$r_buff0_thd2 [L809] 2 a$r_buff1_thd2 = a$w_buff0_used && a$r_buff0_thd2 || a$w_buff1_used && a$r_buff1_thd2 ? (_Bool)0 : a$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=1, y=1, z=1] [L766] 1 a = a$w_buff0_used && a$r_buff0_thd1 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd1 ? a$w_buff1 : a) [L767] 1 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd1 ? (_Bool)0 : a$w_buff0_used [L768] 1 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd1 || a$w_buff1_used && a$r_buff1_thd1 ? (_Bool)0 : a$w_buff1_used [L769] 1 a$r_buff0_thd1 = a$w_buff0_used && a$r_buff0_thd1 ? (_Bool)0 : a$r_buff0_thd1 [L770] 1 a$r_buff1_thd1 = a$w_buff0_used && a$r_buff0_thd1 || a$w_buff1_used && a$r_buff1_thd1 ? (_Bool)0 : a$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=1, y=1, z=1] [L773] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=1, y=1, z=1] [L812] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=1, y=1, z=1] [L832] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t833={5:0}, t834={3:0}, weak$$choice2=0, x=1, y=1, z=1] [L834] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L834] RET 0 assume_abort_if_not(main$tmp_guard0) [L836] 0 a = a$w_buff0_used && a$r_buff0_thd0 ? a$w_buff0 : (a$w_buff1_used && a$r_buff1_thd0 ? a$w_buff1 : a) [L837] 0 a$w_buff0_used = a$w_buff0_used && a$r_buff0_thd0 ? (_Bool)0 : a$w_buff0_used [L838] 0 a$w_buff1_used = a$w_buff0_used && a$r_buff0_thd0 || a$w_buff1_used && a$r_buff1_thd0 ? (_Bool)0 : a$w_buff1_used [L839] 0 a$r_buff0_thd0 = a$w_buff0_used && a$r_buff0_thd0 ? (_Bool)0 : a$r_buff0_thd0 [L840] 0 a$r_buff1_thd0 = a$w_buff0_used && a$r_buff0_thd0 || a$w_buff1_used && a$r_buff1_thd0 ? (_Bool)0 : a$r_buff1_thd0 VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t833={5:0}, t834={3:0}, weak$$choice2=0, x=1, y=1, z=1] [L843] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p0_EBX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t833={5:0}, t834={3:0}, weak$$choice2=0, x=1, y=1, z=1] [L845] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=1, y=1, z=1] [L18] 0 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=1, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=1, y=1, z=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 323 IncrementalHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 11 mSDtfsCounter, 323 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 incorrect! [2023-11-28 23:56:57,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aa51844-c5f8-4c13-b5c5-ada7621f6c93/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE