./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1 --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 fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:12:35,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:12:35,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:12:35,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:12:35,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:12:35,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:12:35,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:12:35,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:12:35,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:12:35,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:12:35,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:12:35,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:12:35,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:12:35,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:12:35,207 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:12:35,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:12:35,208 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:12:35,209 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:12:35,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:12:35,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:12:35,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:12:35,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:12:35,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:12:35,211 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1 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 -> fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 [2024-12-02 15:12:35,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:12:35,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:12:35,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:12:35,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:12:35,459 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:12:35,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-12-02 15:12:38,126 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/data/bbf9a4b2c/d52b655b6a10486c821fb08a98c17a79/FLAG495137dd2 [2024-12-02 15:12:38,350 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:12:38,350 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-12-02 15:12:38,357 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/data/bbf9a4b2c/d52b655b6a10486c821fb08a98c17a79/FLAG495137dd2 [2024-12-02 15:12:38,722 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/data/bbf9a4b2c/d52b655b6a10486c821fb08a98c17a79 [2024-12-02 15:12:38,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:12:38,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:12:38,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:12:38,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:12:38,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:12:38,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:38,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa26c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38, skipping insertion in model container [2024-12-02 15:12:38,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:38,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:12:38,900 WARN L250 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_43f935f2-7bb9-456e-8c72-9b38d08561b2/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c[4345,4358] [2024-12-02 15:12:38,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:12:38,916 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:12:38,940 WARN L250 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_43f935f2-7bb9-456e-8c72-9b38d08561b2/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c[4345,4358] [2024-12-02 15:12:38,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:12:38,959 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:12:38,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38 WrapperNode [2024-12-02 15:12:38,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:12:38,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:12:38,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:12:38,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:12:38,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:38,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,003 INFO L138 Inliner]: procedures = 25, calls = 59, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 305 [2024-12-02 15:12:39,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:12:39,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:12:39,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:12:39,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:12:39,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,018 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,035 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-12-02 15:12:39,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,044 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:12:39,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:12:39,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:12:39,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:12:39,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (1/1) ... [2024-12-02 15:12:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:12:39,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:12:39,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:12:39,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 15:12:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 15:12:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 15:12:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 15:12:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:12:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:12:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:12:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 15:12:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 15:12:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 15:12:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:12:39,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:12:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:12:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:12:39,109 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 15:12:39,203 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:12:39,204 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:12:39,570 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 15:12:39,570 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:12:39,928 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:12:39,928 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 15:12:39,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:39 BoogieIcfgContainer [2024-12-02 15:12:39,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:12:39,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:12:39,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:12:39,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:12:39,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:12:38" (1/3) ... [2024-12-02 15:12:39,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a9e52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:12:39, skipping insertion in model container [2024-12-02 15:12:39,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:38" (2/3) ... [2024-12-02 15:12:39,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a9e52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:12:39, skipping insertion in model container [2024-12-02 15:12:39,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:39" (3/3) ... [2024-12-02 15:12:39,938 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt3.wvr.c [2024-12-02 15:12:39,954 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:12:39,955 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt3.wvr.c that has 5 procedures, 45 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-12-02 15:12:39,955 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 15:12:40,026 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 15:12:40,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 128 flow [2024-12-02 15:12:40,100 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2024-12-02 15:12:40,102 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 15:12:40,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 6/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-12-02 15:12:40,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 128 flow [2024-12-02 15:12:40,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 114 flow [2024-12-02 15:12:40,116 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:12:40,127 INFO L333 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, 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;@17579cd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:12:40,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 15:12:40,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:12:40,163 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-12-02 15:12:40,163 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 15:12:40,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:12:40,164 INFO L206 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, 1, 1, 1] [2024-12-02 15:12:40,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 15:12:40,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:40,171 INFO L85 PathProgramCache]: Analyzing trace with hash 597815785, now seen corresponding path program 1 times [2024-12-02 15:12:40,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:40,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956334098] [2024-12-02 15:12:40,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:12:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:12:40,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:40,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956334098] [2024-12-02 15:12:40,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956334098] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:12:40,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:12:40,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:12:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276184249] [2024-12-02 15:12:40,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:40,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:12:40,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:40,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:12:40,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:12:40,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-12-02 15:12:40,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-12-02 15:12:40,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:12:40,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-12-02 15:12:40,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:12:41,488 INFO L124 PetriNetUnfolderBase]: 1983/2975 cut-off events. [2024-12-02 15:12:41,488 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-12-02 15:12:41,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5895 conditions, 2975 events. 1983/2975 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 17464 event pairs, 155 based on Foata normal form. 106/3017 useless extension candidates. Maximal degree in co-relation 5741. Up to 1928 conditions per place. [2024-12-02 15:12:41,522 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 55 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-12-02 15:12:41,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 308 flow [2024-12-02 15:12:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:12:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 15:12:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-12-02 15:12:41,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-12-02 15:12:41,539 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 5 states and 155 transitions. [2024-12-02 15:12:41,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 308 flow [2024-12-02 15:12:41,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 280 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-12-02 15:12:41,551 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 114 flow [2024-12-02 15:12:41,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-12-02 15:12:41,558 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-12-02 15:12:41,558 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 114 flow [2024-12-02 15:12:41,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-12-02 15:12:41,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:12:41,559 INFO L206 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:12:41,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:12:41,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 15:12:41,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2029641710, now seen corresponding path program 1 times [2024-12-02 15:12:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:41,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922215130] [2024-12-02 15:12:41,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:12:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 15:12:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:41,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922215130] [2024-12-02 15:12:41,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922215130] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:12:41,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:12:41,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:12:41,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983262557] [2024-12-02 15:12:41,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:41,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:12:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:41,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:12:41,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:12:41,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-12-02 15:12:41,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-12-02 15:12:41,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:12:41,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-12-02 15:12:41,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:12:42,511 INFO L124 PetriNetUnfolderBase]: 2913/4164 cut-off events. [2024-12-02 15:12:42,512 INFO L125 PetriNetUnfolderBase]: For 655/1052 co-relation queries the response was YES. [2024-12-02 15:12:42,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8911 conditions, 4164 events. 2913/4164 cut-off events. For 655/1052 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 22801 event pairs, 351 based on Foata normal form. 540/4682 useless extension candidates. Maximal degree in co-relation 1641. Up to 2597 conditions per place. [2024-12-02 15:12:42,531 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 64 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-12-02 15:12:42,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 86 transitions, 356 flow [2024-12-02 15:12:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:12:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 15:12:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-12-02 15:12:42,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-12-02 15:12:42,534 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 114 flow. Second operand 6 states and 185 transitions. [2024-12-02 15:12:42,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 86 transitions, 356 flow [2024-12-02 15:12:42,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 347 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 15:12:42,536 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 159 flow [2024-12-02 15:12:42,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-12-02 15:12:42,537 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-12-02 15:12:42,537 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 159 flow [2024-12-02 15:12:42,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-12-02 15:12:42,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:12:42,537 INFO L206 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:12:42,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:12:42,538 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 15:12:42,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1007653878, now seen corresponding path program 2 times [2024-12-02 15:12:42,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421476421] [2024-12-02 15:12:42,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:12:42,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:42,571 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:12:42,571 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:12:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:12:42,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:42,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421476421] [2024-12-02 15:12:42,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421476421] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:12:42,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361473188] [2024-12-02 15:12:42,742 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:12:42,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:12:42,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:12:42,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:12:42,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:12:42,866 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:12:42,866 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:12:42,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 15:12:42,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:12:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:12:43,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:12:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:12:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361473188] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 15:12:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:12:43,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-12-02 15:12:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534703614] [2024-12-02 15:12:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:43,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:12:43,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:43,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:12:43,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:12:43,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-12-02 15:12:43,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-12-02 15:12:43,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:12:43,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-12-02 15:12:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:12:44,367 INFO L124 PetriNetUnfolderBase]: 6401/8983 cut-off events. [2024-12-02 15:12:44,367 INFO L125 PetriNetUnfolderBase]: For 3444/3969 co-relation queries the response was YES. [2024-12-02 15:12:44,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21233 conditions, 8983 events. 6401/8983 cut-off events. For 3444/3969 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 54073 event pairs, 751 based on Foata normal form. 636/9380 useless extension candidates. Maximal degree in co-relation 12272. Up to 2614 conditions per place. [2024-12-02 15:12:44,437 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 83 selfloop transitions, 9 changer transitions 0/106 dead transitions. [2024-12-02 15:12:44,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 106 transitions, 503 flow [2024-12-02 15:12:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:12:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 15:12:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-12-02 15:12:44,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-12-02 15:12:44,439 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 159 flow. Second operand 6 states and 192 transitions. [2024-12-02 15:12:44,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 106 transitions, 503 flow [2024-12-02 15:12:44,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 106 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 15:12:44,450 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 229 flow [2024-12-02 15:12:44,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-12-02 15:12:44,451 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-12-02 15:12:44,451 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 229 flow [2024-12-02 15:12:44,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-12-02 15:12:44,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:12:44,451 INFO L206 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, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:12:44,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:12:44,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 15:12:44,652 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 15:12:44,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1003115890, now seen corresponding path program 3 times [2024-12-02 15:12:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:44,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188646046] [2024-12-02 15:12:44,653 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:12:44,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:44,682 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 15:12:44,682 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:12:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:12:44,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:44,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188646046] [2024-12-02 15:12:44,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188646046] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:12:44,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:12:44,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:12:44,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947462934] [2024-12-02 15:12:44,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:44,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:12:44,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:44,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:12:44,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:12:44,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-12-02 15:12:44,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-12-02 15:12:44,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:12:44,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-12-02 15:12:44,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:12:45,529 INFO L124 PetriNetUnfolderBase]: 4722/7151 cut-off events. [2024-12-02 15:12:45,529 INFO L125 PetriNetUnfolderBase]: For 9512/10407 co-relation queries the response was YES. [2024-12-02 15:12:45,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19128 conditions, 7151 events. 4722/7151 cut-off events. For 9512/10407 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 47056 event pairs, 2843 based on Foata normal form. 946/7457 useless extension candidates. Maximal degree in co-relation 7489. Up to 5949 conditions per place. [2024-12-02 15:12:45,584 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 34 selfloop transitions, 2 changer transitions 16/76 dead transitions. [2024-12-02 15:12:45,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 376 flow [2024-12-02 15:12:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:12:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 15:12:45,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-12-02 15:12:45,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.655 [2024-12-02 15:12:45,585 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 229 flow. Second operand 4 states and 131 transitions. [2024-12-02 15:12:45,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 376 flow [2024-12-02 15:12:45,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 370 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-12-02 15:12:45,600 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 242 flow [2024-12-02 15:12:45,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-12-02 15:12:45,601 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-12-02 15:12:45,601 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 242 flow [2024-12-02 15:12:45,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-12-02 15:12:45,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:12:45,601 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:12:45,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:12:45,602 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 15:12:45,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash 795643200, now seen corresponding path program 1 times [2024-12-02 15:12:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185796792] [2024-12-02 15:12:45,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:45,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:12:45,631 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:12:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:12:45,681 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:12:45,681 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:12:45,682 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-12-02 15:12:45,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-12-02 15:12:45,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-12-02 15:12:45,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-12-02 15:12:45,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-12-02 15:12:45,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:12:45,685 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-12-02 15:12:45,756 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 15:12:45,756 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 15:12:45,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:12:45 BasicIcfg [2024-12-02 15:12:45,761 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 15:12:45,762 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 15:12:45,762 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 15:12:45,762 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 15:12:45,763 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:39" (3/4) ... [2024-12-02 15:12:45,763 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-02 15:12:45,836 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 37. [2024-12-02 15:12:45,901 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 15:12:45,902 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 15:12:45,902 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 15:12:45,903 INFO L158 Benchmark]: Toolchain (without parser) took 7177.08ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 117.1MB in the beginning and 92.3MB in the end (delta: 24.8MB). Peak memory consumption was 267.6MB. Max. memory is 16.1GB. [2024-12-02 15:12:45,903 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 15:12:45,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.06ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 103.6MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 15:12:45,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.60ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 101.1MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 15:12:45,904 INFO L158 Benchmark]: Boogie Preprocessor took 52.39ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 98.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 15:12:45,904 INFO L158 Benchmark]: RCFGBuilder took 871.30ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 69.0MB in the end (delta: 29.4MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2024-12-02 15:12:45,904 INFO L158 Benchmark]: TraceAbstraction took 5830.28ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 68.4MB in the beginning and 112.9MB in the end (delta: -44.4MB). Peak memory consumption was 194.7MB. Max. memory is 16.1GB. [2024-12-02 15:12:45,904 INFO L158 Benchmark]: Witness Printer took 139.98ms. Allocated memory is still 385.9MB. Free memory was 112.9MB in the beginning and 92.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 15:12:45,906 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.06ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 103.6MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.60ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 101.1MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.39ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 98.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 871.30ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 69.0MB in the end (delta: 29.4MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5830.28ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 68.4MB in the beginning and 112.9MB in the end (delta: -44.4MB). Peak memory consumption was 194.7MB. Max. memory is 16.1GB. * Witness Printer took 139.98ms. Allocated memory is still 385.9MB. Free memory was 112.9MB in the beginning and 92.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 154]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L40] 0 int* q1; [L41] 0 int* q2; [L42] 0 int i, j, total, C, N, M, q1_front, q1_back, q2_front, q2_back, n1, n2; [L124] 0 pthread_t t1, t2, t3, t4; [L126] 0 C = __VERIFIER_nondet_int() [L127] 0 M = __VERIFIER_nondet_int() [L128] 0 N = __VERIFIER_nondet_int() [L130] 0 q1_front = __VERIFIER_nondet_int() [L131] 0 q1_back = __VERIFIER_nondet_int() [L132] 0 q2_front = __VERIFIER_nondet_int() [L133] 0 q2_back = __VERIFIER_nondet_int() [L135] 0 n1 = __VERIFIER_nondet_int() [L136] 0 n2 = __VERIFIER_nondet_int() [L137] CALL, EXPR 0 create_fresh_int_array(n1) [L160] CALL 0 assume_abort_if_not(size >= 0) [L37] COND FALSE 0 !(!cond) [L160] RET 0 assume_abort_if_not(size >= 0) [L161] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L37] COND FALSE 0 !(!cond) [L161] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L163] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L164] 0 int i = 0; VAL [C=3, M=0, N=1, \old(size)=1, arr={-1:0}, i=0, i=0, j=0, n1=1, n2=0, q1={0:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, size=1, total=0] [L164] COND TRUE 0 i < size [L165] 0 arr[i] = __VERIFIER_nondet_int() [L164] 0 i++ VAL [C=3, M=0, N=1, \old(size)=1, arr={-1:0}, i=0, i=1, j=0, n1=1, n2=0, q1={0:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, size=1, total=0] [L164] COND FALSE 0 !(i < size) [L167] 0 return arr; [L137] RET, EXPR 0 create_fresh_int_array(n1) [L137] 0 q1 = create_fresh_int_array(n1) [L138] CALL, EXPR 0 create_fresh_int_array(n2) [L160] CALL 0 assume_abort_if_not(size >= 0) [L37] COND FALSE 0 !(!cond) [L160] RET 0 assume_abort_if_not(size >= 0) [L161] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L37] COND FALSE 0 !(!cond) [L161] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L163] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L164] 0 int i = 0; VAL [C=3, M=0, N=1, \old(size)=0, arr={-4:0}, i=0, i=0, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, size=0, total=0] [L164] COND FALSE 0 !(i < size) [L167] 0 return arr; [L138] RET, EXPR 0 create_fresh_int_array(n2) [L138] 0 q2 = create_fresh_int_array(n2) [L140] CALL 0 assume_abort_if_not(C > -2147483648) [L37] COND FALSE 0 !(!cond) [L140] RET 0 assume_abort_if_not(C > -2147483648) [L141] CALL 0 assume_abort_if_not(N > M && M >= 0 && C > 0 && q1_front == q1_back && q2_front == q2_back) [L37] COND FALSE 0 !(!cond) [L141] RET 0 assume_abort_if_not(N > M && M >= 0 && C > 0 && q1_front == q1_back && q2_front == q2_back) [L144] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [C=3, M=0, N=1, i=0, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, total=0] [L49] 1 _Bool cond = i < N; VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L51] COND TRUE 1 \read(cond) VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L53] EXPR 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L53] EXPR 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L53] EXPR 1 q1[q1_back] [L53] EXPR 1 q1_back >= 0 && q1_back < n1 && q1[q1_back] == C [L53] CALL 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1 && q1[q1_back] == C) [L37] COND FALSE 1 !(!cond) [L53] RET 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1 && q1[q1_back] == C) [L54] 1 i++ VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L145] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, total=0] [L69] 2 _Bool cond = j < M; VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L71] COND FALSE 2 !(\read(cond)) [L84] 2 return 0; [L146] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, t3=-1, total=0] [L89] 3 _Bool cond = i < N || q1_front < q1_back; VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L57] 1 q1_back++ VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L60] 1 cond = i < N VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L51] COND FALSE 1 !(\read(cond)) [L64] 1 return 0; [L147] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, t3=-1, t4=0, total=0] [L107] 4 _Bool cond = j < M || q2_front < q2_back; VAL [C=3, M=0, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L109] COND FALSE 4 !(\read(cond)) [L120] 4 return 0; [L91] COND FALSE 3 !(\read(cond)) [L102] 3 return 0; [L148] FCALL, JOIN 1 pthread_join(t1, 0) VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, t3=-1, t4=0, total=0] [L149] FCALL, JOIN 2 pthread_join(t2, 0) VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, t3=-1, t4=0, total=0] [L150] FCALL, JOIN 3 pthread_join(t3, 0) VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, t3=-1, t4=0, total=0] [L151] FCALL, JOIN 4 pthread_join(t4, 0) VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, t3=-1, t4=0, total=0] [L153] CALL 0 assume_abort_if_not(total <= 0) [L37] COND FALSE 0 !(!cond) [L153] RET 0 assume_abort_if_not(total <= 0) [L154] 0 reach_error() VAL [C=3, M=0, N=1, i=1, j=0, n1=1, n2=0, q1={-1:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-3, t2=-2, t3=-1, t4=0, total=0] - UnprovableResult [Line: 147]: 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: 144]: 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: 146]: 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: 145]: 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 9 procedures, 75 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: 5.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 532 IncrementalHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 9 mSDtfsCounter, 532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred 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, 1.4s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 598 SizeOfPredicates, 8 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-12-02 15:12:45,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43f935f2-7bb9-456e-8c72-9b38d08561b2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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