./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.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_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme --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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:52,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:52,330 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:59:52,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:52,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:52,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:52,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:52,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:52,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:59:52,384 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:59:52,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:59:52,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:59:52,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:52,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:52,390 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:52,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:52,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:59:52,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:59:52,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:52,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:59:52,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:52,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:59:52,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:59:52,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:59:52,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:59:52,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:59:52,395 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:52,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:52,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:52,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:59:52,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:59:52,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:52,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:52,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:59:52,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:59:52,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:52,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:59:52,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:59:52,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:59:52,400 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:59:52,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:59:52,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:59:52,401 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_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2023-11-26 11:59:52,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:59:52,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:59:52,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:59:52,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:59:52,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:59:52,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-26 11:59:55,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:59:56,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:59:56,226 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-26 11:59:56,243 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/data/8433de56f/40259e52c9874fb396be076b64253655/FLAG1c233c844 [2023-11-26 11:59:56,259 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/data/8433de56f/40259e52c9874fb396be076b64253655 [2023-11-26 11:59:56,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:59:56,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:59:56,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:56,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:59:56,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:59:56,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b69d925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:56, skipping insertion in model container [2023-11-26 11:59:56,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:56" (1/1) ... [2023-11-26 11:59:56,320 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:59:56,839 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_b42b09f0-3c1e-480a-ad78-56f1f92100b7/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-11-26 11:59:56,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:56,862 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:59:56,935 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_b42b09f0-3c1e-480a-ad78-56f1f92100b7/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2023-11-26 11:59:56,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:57,029 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:59:57,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57 WrapperNode [2023-11-26 11:59:57,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:57,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:57,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:59:57,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:59:57,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,094 INFO L138 Inliner]: procedures = 244, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-11-26 11:59:57,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:57,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:59:57,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:59:57,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:59:57,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,134 INFO L175 MemorySlicer]: Split 31 memory accesses to 7 slices as follows [2, 1, 8, 8, 8, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 27 initializations are split as follows [2, 1, 8, 8, 8, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 0, 1, 1]. [2023-11-26 11:59:57,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:59:57,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:59:57,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:59:57,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:59:57,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (1/1) ... [2023-11-26 11:59:57,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:57,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:57,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:57,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:59:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:59:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:59:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:59:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:59:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:59:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:59:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:59:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:59:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:59:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:59:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:59:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:59:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:59:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:59:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:59:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:59:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:59:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:59:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:59:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:59:57,279 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:59:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:59:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:59:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:59:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:59:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:59:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:59:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:59:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:59:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:59:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:59:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:59:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:59:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:59:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:59:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:59:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:59:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:59:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:59:57,292 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:59:57,480 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:59:57,483 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:59:57,787 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:59:58,062 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:59:58,063 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:59:58,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:58 BoogieIcfgContainer [2023-11-26 11:59:58,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:59:58,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:59:58,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:59:58,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:59:58,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:59:56" (1/3) ... [2023-11-26 11:59:58,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44432fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:58, skipping insertion in model container [2023-11-26 11:59:58,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:57" (2/3) ... [2023-11-26 11:59:58,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44432fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:59:58, skipping insertion in model container [2023-11-26 11:59:58,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:58" (3/3) ... [2023-11-26 11:59:58,082 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-11-26 11:59:58,090 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:59:58,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:59:58,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:59:58,101 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:59:58,143 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:59:58,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2023-11-26 11:59:58,209 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2023-11-26 11:59:58,210 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:59:58,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2023-11-26 11:59:58,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2023-11-26 11:59:58,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 84 flow [2023-11-26 11:59:58,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:59:58,234 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;@8f9d18f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:59:58,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-26 11:59:58,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:59:58,255 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-11-26 11:59:58,255 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:59:58,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:58,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:58,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 11:59:58,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1902226999, now seen corresponding path program 1 times [2023-11-26 11:59:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777624179] [2023-11-26 11:59:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:58,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:58,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777624179] [2023-11-26 11:59:58,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777624179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:58,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:58,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:59:58,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937119148] [2023-11-26 11:59:58,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:58,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:59:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:59:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:59:58,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 11:59:58,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 84 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) [2023-11-26 11:59:58,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:59:58,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 11:59:58,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:59:58,976 INFO L124 PetriNetUnfolderBase]: 557/980 cut-off events. [2023-11-26 11:59:58,977 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-26 11:59:58,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 980 events. 557/980 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4560 event pairs, 226 based on Foata normal form. 20/972 useless extension candidates. Maximal degree in co-relation 1718. Up to 533 conditions per place. [2023-11-26 11:59:58,989 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 43 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-26 11:59:58,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 215 flow [2023-11-26 11:59:58,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:59:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:59:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-26 11:59:59,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2023-11-26 11:59:59,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-26 11:59:59,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-26 11:59:59,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:59:59,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-26 11:59:59,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2023-11-26 11:59:59,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2023-11-26 11:59:59,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2023-11-26 11:59:59,017 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 84 flow. Second operand 3 states and 88 transitions. [2023-11-26 11:59:59,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 215 flow [2023-11-26 11:59:59,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 205 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:59:59,024 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 88 flow [2023-11-26 11:59:59,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-11-26 11:59:59,029 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-11-26 11:59:59,030 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 88 flow [2023-11-26 11:59:59,030 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) [2023-11-26 11:59:59,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:59,030 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] [2023-11-26 11:59:59,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:59:59,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 11:59:59,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2135332443, now seen corresponding path program 1 times [2023-11-26 11:59:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125567558] [2023-11-26 11:59:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:59:59,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:59,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125567558] [2023-11-26 11:59:59,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125567558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:59,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:59,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:59:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702821861] [2023-11-26 11:59:59,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:59,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:59:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:59,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:59:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:59:59,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 11:59:59,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-26 11:59:59,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:59:59,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 11:59:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:59:59,495 INFO L124 PetriNetUnfolderBase]: 963/1723 cut-off events. [2023-11-26 11:59:59,495 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-26 11:59:59,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 1723 events. 963/1723 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9222 event pairs, 408 based on Foata normal form. 34/1738 useless extension candidates. Maximal degree in co-relation 637. Up to 889 conditions per place. [2023-11-26 11:59:59,511 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-26 11:59:59,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 233 flow [2023-11-26 11:59:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:59:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:59:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-26 11:59:59,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2023-11-26 11:59:59,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-26 11:59:59,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-26 11:59:59,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:59:59,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-26 11:59:59,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2023-11-26 11:59:59,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2023-11-26 11:59:59,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2023-11-26 11:59:59,517 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 88 flow. Second operand 3 states and 88 transitions. [2023-11-26 11:59:59,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 233 flow [2023-11-26 11:59:59,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:59:59,521 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 98 flow [2023-11-26 11:59:59,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-26 11:59:59,522 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-11-26 11:59:59,523 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 98 flow [2023-11-26 11:59:59,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-26 11:59:59,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:59:59,523 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, 1, 1] [2023-11-26 11:59:59,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:59:59,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 11:59:59,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2135743853, now seen corresponding path program 1 times [2023-11-26 11:59:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486841209] [2023-11-26 11:59:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:59,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:59,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486841209] [2023-11-26 11:59:59,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486841209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549610754] [2023-11-26 11:59:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:59,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:59,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:59,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:59:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:59:59,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:59,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549610754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:00,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:00,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-26 12:00:00,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392790007] [2023-11-26 12:00:00,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:00,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:00,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:00,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2023-11-26 12:00:00,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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) [2023-11-26 12:00:00,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:00,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2023-11-26 12:00:00,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:00,481 INFO L124 PetriNetUnfolderBase]: 1527/2623 cut-off events. [2023-11-26 12:00:00,482 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-11-26 12:00:00,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5425 conditions, 2623 events. 1527/2623 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 13904 event pairs, 149 based on Foata normal form. 68/2674 useless extension candidates. Maximal degree in co-relation 1964. Up to 709 conditions per place. [2023-11-26 12:00:00,503 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 79 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2023-11-26 12:00:00,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 93 transitions, 405 flow [2023-11-26 12:00:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:00,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2023-11-26 12:00:00,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-26 12:00:00,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 147 transitions. [2023-11-26 12:00:00,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 147 transitions. [2023-11-26 12:00:00,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:00,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 147 transitions. [2023-11-26 12:00:00,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2023-11-26 12:00:00,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 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) [2023-11-26 12:00:00,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 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) [2023-11-26 12:00:00,510 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 98 flow. Second operand 5 states and 147 transitions. [2023-11-26 12:00:00,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 93 transitions, 405 flow [2023-11-26 12:00:00,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 93 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:00,514 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 126 flow [2023-11-26 12:00:00,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-26 12:00:00,515 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-11-26 12:00:00,515 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 126 flow [2023-11-26 12:00:00,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 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) [2023-11-26 12:00:00,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:00,516 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:00,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:00,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 12:00:00,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash 434029025, now seen corresponding path program 2 times [2023-11-26 12:00:00,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:00,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555350000] [2023-11-26 12:00:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:00,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:00:00,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:00,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555350000] [2023-11-26 12:00:00,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555350000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:00,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228039490] [2023-11-26 12:00:00,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:00,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:00,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:01,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:00:01,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:01,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:00:01,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:00:01,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:01,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228039490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:01,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:01,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 12:00:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250860190] [2023-11-26 12:00:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:01,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:01,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:01,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:01,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2023-11-26 12:00:01,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-26 12:00:01,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:01,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2023-11-26 12:00:01,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:01,600 INFO L124 PetriNetUnfolderBase]: 1964/3425 cut-off events. [2023-11-26 12:00:01,600 INFO L125 PetriNetUnfolderBase]: For 935/935 co-relation queries the response was YES. [2023-11-26 12:00:01,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 3425 events. 1964/3425 cut-off events. For 935/935 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17749 event pairs, 442 based on Foata normal form. 0/3227 useless extension candidates. Maximal degree in co-relation 4996. Up to 1733 conditions per place. [2023-11-26 12:00:01,637 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 53 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-11-26 12:00:01,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 326 flow [2023-11-26 12:00:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:01,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2023-11-26 12:00:01,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2023-11-26 12:00:01,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 101 transitions. [2023-11-26 12:00:01,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 101 transitions. [2023-11-26 12:00:01,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:01,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 101 transitions. [2023-11-26 12:00:01,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.25) internal successors, (101), 4 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) [2023-11-26 12:00:01,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2023-11-26 12:00:01,645 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2023-11-26 12:00:01,645 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 126 flow. Second operand 4 states and 101 transitions. [2023-11-26 12:00:01,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 326 flow [2023-11-26 12:00:01,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 315 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:01,697 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 145 flow [2023-11-26 12:00:01,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-11-26 12:00:01,698 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2023-11-26 12:00:01,698 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 145 flow [2023-11-26 12:00:01,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-26 12:00:01,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:01,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:01,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:01,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:01,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 12:00:01,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1524638935, now seen corresponding path program 3 times [2023-11-26 12:00:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:01,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003877828] [2023-11-26 12:00:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 12:00:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003877828] [2023-11-26 12:00:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003877828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:02,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:02,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:02,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995166215] [2023-11-26 12:00:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:02,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:02,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:02,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2023-11-26 12:00:02,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-11-26 12:00:02,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:02,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2023-11-26 12:00:02,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:02,389 INFO L124 PetriNetUnfolderBase]: 792/1686 cut-off events. [2023-11-26 12:00:02,390 INFO L125 PetriNetUnfolderBase]: For 859/859 co-relation queries the response was YES. [2023-11-26 12:00:02,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 1686 events. 792/1686 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8367 event pairs, 242 based on Foata normal form. 164/1845 useless extension candidates. Maximal degree in co-relation 2534. Up to 828 conditions per place. [2023-11-26 12:00:02,406 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 36 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2023-11-26 12:00:02,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 293 flow [2023-11-26 12:00:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2023-11-26 12:00:02,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2023-11-26 12:00:02,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 83 transitions. [2023-11-26 12:00:02,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 83 transitions. [2023-11-26 12:00:02,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:02,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 83 transitions. [2023-11-26 12:00:02,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-26 12:00:02,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2023-11-26 12:00:02,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 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) [2023-11-26 12:00:02,411 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 145 flow. Second operand 3 states and 83 transitions. [2023-11-26 12:00:02,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 293 flow [2023-11-26 12:00:02,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:02,417 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 160 flow [2023-11-26 12:00:02,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-26 12:00:02,420 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-11-26 12:00:02,420 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 160 flow [2023-11-26 12:00:02,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-11-26 12:00:02,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:02,421 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:02,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:02,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 12:00:02,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1022226735, now seen corresponding path program 4 times [2023-11-26 12:00:02,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:02,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226286719] [2023-11-26 12:00:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:02,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:02,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226286719] [2023-11-26 12:00:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226286719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971034003] [2023-11-26 12:00:02,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 12:00:02,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:02,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:02,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:02,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:02,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 12:00:02,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:02,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:02,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:02,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:02,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971034003] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:02,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:02,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-11-26 12:00:02,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251010922] [2023-11-26 12:00:02,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:02,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:02,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:02,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:02,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2023-11-26 12:00:02,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2023-11-26 12:00:02,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:02,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2023-11-26 12:00:02,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:03,346 INFO L124 PetriNetUnfolderBase]: 1464/2922 cut-off events. [2023-11-26 12:00:03,347 INFO L125 PetriNetUnfolderBase]: For 1813/1813 co-relation queries the response was YES. [2023-11-26 12:00:03,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 2922 events. 1464/2922 cut-off events. For 1813/1813 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 16365 event pairs, 210 based on Foata normal form. 138/3048 useless extension candidates. Maximal degree in co-relation 5161. Up to 1054 conditions per place. [2023-11-26 12:00:03,377 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 82 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2023-11-26 12:00:03,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 98 transitions, 570 flow [2023-11-26 12:00:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2023-11-26 12:00:03,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-26 12:00:03,379 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 144 transitions. [2023-11-26 12:00:03,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 144 transitions. [2023-11-26 12:00:03,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:03,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 144 transitions. [2023-11-26 12:00:03,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2023-11-26 12:00:03,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 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) [2023-11-26 12:00:03,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 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) [2023-11-26 12:00:03,382 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 160 flow. Second operand 5 states and 144 transitions. [2023-11-26 12:00:03,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 98 transitions, 570 flow [2023-11-26 12:00:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 98 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:03,390 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 182 flow [2023-11-26 12:00:03,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-11-26 12:00:03,393 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2023-11-26 12:00:03,393 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 182 flow [2023-11-26 12:00:03,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2023-11-26 12:00:03,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:03,395 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:03,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:03,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:03,602 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 12:00:03,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1699986695, now seen corresponding path program 5 times [2023-11-26 12:00:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609651120] [2023-11-26 12:00:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:03,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609651120] [2023-11-26 12:00:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609651120] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269944818] [2023-11-26 12:00:03,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 12:00:03,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:03,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:03,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:03,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:04,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-26 12:00:04,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:04,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 12:00:04,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 12:00:04,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 12:00:04,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269944818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:04,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:04,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-11-26 12:00:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316350862] [2023-11-26 12:00:04,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:04,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:04,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:04,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2023-11-26 12:00:04,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 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) [2023-11-26 12:00:04,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:04,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2023-11-26 12:00:04,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:04,467 INFO L124 PetriNetUnfolderBase]: 548/1194 cut-off events. [2023-11-26 12:00:04,467 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2023-11-26 12:00:04,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 1194 events. 548/1194 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5203 event pairs, 165 based on Foata normal form. 0/1188 useless extension candidates. Maximal degree in co-relation 1497. Up to 540 conditions per place. [2023-11-26 12:00:04,479 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 50 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-26 12:00:04,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 373 flow [2023-11-26 12:00:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2023-11-26 12:00:04,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2023-11-26 12:00:04,481 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 95 transitions. [2023-11-26 12:00:04,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 95 transitions. [2023-11-26 12:00:04,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:04,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 95 transitions. [2023-11-26 12:00:04,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2023-11-26 12:00:04,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2023-11-26 12:00:04,483 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2023-11-26 12:00:04,484 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 182 flow. Second operand 4 states and 95 transitions. [2023-11-26 12:00:04,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 373 flow [2023-11-26 12:00:04,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 361 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:04,489 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 172 flow [2023-11-26 12:00:04,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2023-11-26 12:00:04,491 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2023-11-26 12:00:04,491 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 172 flow [2023-11-26 12:00:04,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 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) [2023-11-26 12:00:04,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:04,492 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:04,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:04,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:04,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-26 12:00:04,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1909675725, now seen corresponding path program 6 times [2023-11-26 12:00:04,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:04,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967183080] [2023-11-26 12:00:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:04,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:00:04,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:00:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:00:04,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:00:04,808 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:00:04,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-26 12:00:04,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-26 12:00:04,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-26 12:00:04,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:00:04,814 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2023-11-26 12:00:04,820 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:00:04,820 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:00:04,885 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre16 could not be translated [2023-11-26 12:00:04,887 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,887 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre18 could not be translated [2023-11-26 12:00:04,888 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,888 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,891 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,891 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,892 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,893 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,894 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-26 12:00:04,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem20 could not be translated [2023-11-26 12:00:04,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,898 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem21 could not be translated [2023-11-26 12:00:04,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:00:04 BasicIcfg [2023-11-26 12:00:04,911 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:00:04,912 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:00:04,912 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:00:04,912 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:00:04,912 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:58" (3/4) ... [2023-11-26 12:00:04,913 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-26 12:00:04,943 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre16 could not be translated [2023-11-26 12:00:04,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre18 could not be translated [2023-11-26 12:00:04,945 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,945 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,947 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,948 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,948 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,949 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,950 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 12:00:04,951 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-26 12:00:04,951 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,952 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,952 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem20 could not be translated [2023-11-26 12:00:04,952 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-26 12:00:04,953 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem21 could not be translated [2023-11-26 12:00:05,003 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:00:05,004 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:00:05,004 INFO L158 Benchmark]: Toolchain (without parser) took 8741.02ms. Allocated memory was 165.7MB in the beginning and 283.1MB in the end (delta: 117.4MB). Free memory was 125.6MB in the beginning and 98.3MB in the end (delta: 27.3MB). Peak memory consumption was 147.8MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,005 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:05,005 INFO L158 Benchmark]: CACSL2BoogieTranslator took 765.36ms. Allocated memory is still 165.7MB. Free memory was 125.1MB in the beginning and 97.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.21ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,006 INFO L158 Benchmark]: Boogie Preprocessor took 62.64ms. Allocated memory is still 165.7MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,006 INFO L158 Benchmark]: RCFGBuilder took 903.35ms. Allocated memory is still 165.7MB. Free memory was 92.5MB in the beginning and 93.9MB in the end (delta: -1.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,007 INFO L158 Benchmark]: TraceAbstraction took 6845.81ms. Allocated memory was 165.7MB in the beginning and 283.1MB in the end (delta: 117.4MB). Free memory was 93.2MB in the beginning and 112.0MB in the end (delta: -18.8MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,007 INFO L158 Benchmark]: Witness Printer took 92.31ms. Allocated memory is still 283.1MB. Free memory was 112.0MB in the beginning and 98.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 12:00:05,009 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 765.36ms. Allocated memory is still 165.7MB. Free memory was 125.1MB in the beginning and 97.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.21ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 95.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.64ms. Allocated memory is still 165.7MB. Free memory was 95.8MB in the beginning and 92.5MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 903.35ms. Allocated memory is still 165.7MB. Free memory was 92.5MB in the beginning and 93.9MB in the end (delta: -1.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6845.81ms. Allocated memory was 165.7MB in the beginning and 283.1MB in the end (delta: 117.4MB). Free memory was 93.2MB in the beginning and 112.0MB in the end (delta: -18.8MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. * Witness Printer took 92.31ms. Allocated memory is still 283.1MB. Free memory was 112.0MB in the beginning and 98.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem21 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem21 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: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; [L871] 0 unsigned long total; [L872] 0 int flag; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L873] 0 pthread_mutex_t m; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L874] 0 pthread_cond_t empty, full; [L907] 0 pthread_t t1, t2; [L908] 0 num = 0 [L909] 0 total = 0 [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=0] [L876] 1 int i; [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=0] [L890] 2 int j; [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L915] 0 \read(t1) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1] [L880] COND FALSE 1 !(num > 0) [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=1] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L878] COND FALSE 1 !(i < 3) [L887] 1 return ((void *)0); [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, t1={6:0}, t2={7:0}, total=1] [L916] 0 \read(t2) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1] [L894] COND FALSE 2 !(num == 0) [L896] 2 total = total + j [L897] 2 num-- VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=0, total=3] [L900] 2 j++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) [L902] 2 total = total + j [L903] 2 flag = 1 [L904] 2 return ((void *)0); [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L917] COND TRUE 0 \read(flag) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6] - UnprovableResult [Line: 913]: 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: 914]: 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, 61 locations, 3 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: 6.6s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 250 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 592 IncrementalHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 3 mSDtfsCounter, 592 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 312 GetRequests, 289 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=6, InterpolantAutomatonStates: 27, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 468 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 528 ConstructedInterpolants, 0 QuantifiedInterpolants, 1032 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1100 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 228/293 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! [2023-11-26 12:00:05,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b42b09f0-3c1e-480a-ad78-56f1f92100b7/bin/uautomizer-verify-VRDe98Ueme/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