./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix018.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix018.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7349305eeae716fa3a7c11218caa894d6e5121d77db0055a98af7bd7c666586 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:29:29,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:29:29,361 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:29:29,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:29:29,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:29:29,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:29:29,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:29:29,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:29:29,415 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:29:29,420 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:29:29,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:29:29,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:29:29,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:29:29,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:29:29,425 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:29:29,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:29:29,426 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:29:29,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:29:29,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:29:29,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:29:29,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:29:29,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:29:29,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:29:29,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:29:29,429 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:29:29,429 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:29:29,430 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:29:29,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:29:29,431 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:29:29,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:29:29,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:29:29,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:29:29,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:29:29,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:29,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:29:29,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:29:29,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:29:29,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:29:29,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:29:29,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:29:29,435 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:29:29,435 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:29:29,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:29:29,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:29:29,437 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_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7349305eeae716fa3a7c11218caa894d6e5121d77db0055a98af7bd7c666586 [2023-11-23 22:29:29,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:29:29,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:29:29,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:29:29,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:29:29,717 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:29:29,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/mix018.opt.i [2023-11-23 22:29:32,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:29:33,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:29:33,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/sv-benchmarks/c/pthread-wmm/mix018.opt.i [2023-11-23 22:29:33,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/data/7b433d2ee/569b6e54b440433d9772ce1ea78594c5/FLAG8aef0089c [2023-11-23 22:29:33,305 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/data/7b433d2ee/569b6e54b440433d9772ce1ea78594c5 [2023-11-23 22:29:33,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:29:33,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:29:33,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:33,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:29:33,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:29:33,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:33" (1/1) ... [2023-11-23 22:29:33,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733a2b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:33, skipping insertion in model container [2023-11-23 22:29:33,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:33" (1/1) ... [2023-11-23 22:29:33,401 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:29:33,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:33,983 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:29:34,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:34,140 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:34,141 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:34,149 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:29:34,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34 WrapperNode [2023-11-23 22:29:34,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:34,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:34,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:29:34,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:29:34,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,224 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 172 [2023-11-23 22:29:34,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:34,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:29:34,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:29:34,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:29:34,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,244 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,262 INFO L189 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-23 22:29:34,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:29:34,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:29:34,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:29:34,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:29:34,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (1/1) ... [2023-11-23 22:29:34,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:34,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:34,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:29:34,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:29:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:29:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:29:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:29:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:29:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:29:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:29:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:29:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:29:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:29:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:29:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:29:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:29:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:29:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:29:34,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:29:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 22:29:34,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 22:29:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:29:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:29:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:29:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:29:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:29:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:29:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:29:34,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:29:34,420 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:29:34,640 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:29:34,645 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:29:35,250 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:29:35,545 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:29:35,545 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:29:35,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:35 BoogieIcfgContainer [2023-11-23 22:29:35,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:29:35,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:29:35,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:29:35,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:29:35,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:29:33" (1/3) ... [2023-11-23 22:29:35,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e22d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:35, skipping insertion in model container [2023-11-23 22:29:35,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:34" (2/3) ... [2023-11-23 22:29:35,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e22d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:35, skipping insertion in model container [2023-11-23 22:29:35,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:35" (3/3) ... [2023-11-23 22:29:35,556 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018.opt.i [2023-11-23 22:29:35,564 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:29:35,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:29:35,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 22:29:35,576 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:29:35,689 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:29:35,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2023-11-23 22:29:35,793 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-11-23 22:29:35,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:29:35,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-23 22:29:35,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2023-11-23 22:29:35,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 106 flow [2023-11-23 22:29:35,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:29:35,826 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;@91865eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:29:35,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-23 22:29:35,836 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:29:35,836 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-23 22:29:35,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:29:35,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:35,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:35,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:29:35,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash -296570428, now seen corresponding path program 1 times [2023-11-23 22:29:35,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922195553] [2023-11-23 22:29:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922195553] [2023-11-23 22:29:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922195553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:36,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:29:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538261382] [2023-11-23 22:29:36,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:36,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:29:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:29:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:36,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:29:36,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-23 22:29:36,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:36,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:29:36,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:39,878 INFO L124 PetriNetUnfolderBase]: 15277/20541 cut-off events. [2023-11-23 22:29:39,879 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-23 22:29:39,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41331 conditions, 20541 events. 15277/20541 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 137951 event pairs, 7263 based on Foata normal form. 0/14348 useless extension candidates. Maximal degree in co-relation 41319. Up to 20417 conditions per place. [2023-11-23 22:29:40,111 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 45 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-11-23 22:29:40,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 251 flow [2023-11-23 22:29:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:29:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:29:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-23 22:29:40,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2023-11-23 22:29:40,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-23 22:29:40,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-23 22:29:40,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:40,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-23 22:29:40,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-11-23 22:29:40,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:40,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:40,148 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 106 flow. Second operand 3 states and 115 transitions. [2023-11-23 22:29:40,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 251 flow [2023-11-23 22:29:40,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:29:40,162 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 149 flow [2023-11-23 22:29:40,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-23 22:29:40,169 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-11-23 22:29:40,169 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 149 flow [2023-11-23 22:29:40,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-23 22:29:40,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:40,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:40,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:29:40,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:29:40,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:40,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1979201783, now seen corresponding path program 1 times [2023-11-23 22:29:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:40,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681577591] [2023-11-23 22:29:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:40,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681577591] [2023-11-23 22:29:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681577591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:40,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:40,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830046516] [2023-11-23 22:29:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:40,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:40,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:40,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:40,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:29:40,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:40,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:40,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:29:40,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:42,117 INFO L124 PetriNetUnfolderBase]: 7641/10385 cut-off events. [2023-11-23 22:29:42,118 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2023-11-23 22:29:42,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25146 conditions, 10385 events. 7641/10385 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 65338 event pairs, 3143 based on Foata normal form. 0/8388 useless extension candidates. Maximal degree in co-relation 25135. Up to 10260 conditions per place. [2023-11-23 22:29:42,230 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 41 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-11-23 22:29:42,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 259 flow [2023-11-23 22:29:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:42,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2023-11-23 22:29:42,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2023-11-23 22:29:42,233 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 126 transitions. [2023-11-23 22:29:42,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 126 transitions. [2023-11-23 22:29:42,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:42,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 126 transitions. [2023-11-23 22:29:42,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2023-11-23 22:29:42,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2023-11-23 22:29:42,238 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2023-11-23 22:29:42,238 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 149 flow. Second operand 4 states and 126 transitions. [2023-11-23 22:29:42,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 259 flow [2023-11-23 22:29:42,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:29:42,242 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 138 flow [2023-11-23 22:29:42,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-11-23 22:29:42,244 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2023-11-23 22:29:42,244 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 138 flow [2023-11-23 22:29:42,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:42,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:42,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:42,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:29:42,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:29:42,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1979201782, now seen corresponding path program 1 times [2023-11-23 22:29:42,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:42,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73394405] [2023-11-23 22:29:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:42,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:42,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73394405] [2023-11-23 22:29:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73394405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:42,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:42,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:42,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140742666] [2023-11-23 22:29:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:42,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:42,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:42,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:42,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:29:42,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:42,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:42,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:29:42,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:43,539 INFO L124 PetriNetUnfolderBase]: 5209/7201 cut-off events. [2023-11-23 22:29:43,540 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2023-11-23 22:29:43,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17019 conditions, 7201 events. 5209/7201 cut-off events. For 988/988 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 42885 event pairs, 1005 based on Foata normal form. 0/6288 useless extension candidates. Maximal degree in co-relation 17007. Up to 6369 conditions per place. [2023-11-23 22:29:43,600 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 57 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-11-23 22:29:43,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 356 flow [2023-11-23 22:29:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:29:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2023-11-23 22:29:43,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2023-11-23 22:29:43,603 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 146 transitions. [2023-11-23 22:29:43,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 146 transitions. [2023-11-23 22:29:43,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:43,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 146 transitions. [2023-11-23 22:29:43,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2023-11-23 22:29:43,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2023-11-23 22:29:43,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2023-11-23 22:29:43,607 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 138 flow. Second operand 4 states and 146 transitions. [2023-11-23 22:29:43,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 356 flow [2023-11-23 22:29:43,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:29:43,610 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 190 flow [2023-11-23 22:29:43,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-23 22:29:43,611 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-11-23 22:29:43,612 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 190 flow [2023-11-23 22:29:43,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:43,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:43,613 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] [2023-11-23 22:29:43,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:29:43,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:29:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1545325236, now seen corresponding path program 1 times [2023-11-23 22:29:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:43,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213131050] [2023-11-23 22:29:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:43,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213131050] [2023-11-23 22:29:43,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213131050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:43,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:43,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:43,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114483444] [2023-11-23 22:29:43,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:29:43,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:29:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:43,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:29:43,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2023-11-23 22:29:43,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:43,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:29:43,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:44,704 INFO L124 PetriNetUnfolderBase]: 3481/4849 cut-off events. [2023-11-23 22:29:44,704 INFO L125 PetriNetUnfolderBase]: For 2424/2424 co-relation queries the response was YES. [2023-11-23 22:29:44,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 4849 events. 3481/4849 cut-off events. For 2424/2424 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27001 event pairs, 165 based on Foata normal form. 0/4680 useless extension candidates. Maximal degree in co-relation 13165. Up to 2353 conditions per place. [2023-11-23 22:29:44,749 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 67 selfloop transitions, 13 changer transitions 4/99 dead transitions. [2023-11-23 22:29:44,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 482 flow [2023-11-23 22:29:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:29:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:29:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2023-11-23 22:29:44,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7176470588235294 [2023-11-23 22:29:44,753 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 183 transitions. [2023-11-23 22:29:44,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 183 transitions. [2023-11-23 22:29:44,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:44,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 183 transitions. [2023-11-23 22:29:44,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2023-11-23 22:29:44,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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) [2023-11-23 22:29:44,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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) [2023-11-23 22:29:44,759 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 190 flow. Second operand 5 states and 183 transitions. [2023-11-23 22:29:44,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 482 flow [2023-11-23 22:29:44,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 464 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-23 22:29:44,768 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 214 flow [2023-11-23 22:29:44,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-23 22:29:44,770 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-11-23 22:29:44,770 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 214 flow [2023-11-23 22:29:44,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2023-11-23 22:29:44,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:29:44,771 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, 1] [2023-11-23 22:29:44,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:29:44,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:29:44,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1079347356, now seen corresponding path program 1 times [2023-11-23 22:29:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:44,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187861692] [2023-11-23 22:29:44,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187861692] [2023-11-23 22:29:44,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187861692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:44,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:44,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:29:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97203030] [2023-11-23 22:29:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:44,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:29:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:29:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:29:45,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 51 [2023-11-23 22:29:45,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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) [2023-11-23 22:29:45,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:29:45,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 51 [2023-11-23 22:29:45,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:29:45,661 INFO L124 PetriNetUnfolderBase]: 2809/3937 cut-off events. [2023-11-23 22:29:45,662 INFO L125 PetriNetUnfolderBase]: For 4592/4592 co-relation queries the response was YES. [2023-11-23 22:29:45,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11389 conditions, 3937 events. 2809/3937 cut-off events. For 4592/4592 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 22023 event pairs, 45 based on Foata normal form. 160/4088 useless extension candidates. Maximal degree in co-relation 11375. Up to 1664 conditions per place. [2023-11-23 22:29:45,682 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2023-11-23 22:29:45,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 434 flow [2023-11-23 22:29:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:29:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:29:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2023-11-23 22:29:45,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2023-11-23 22:29:45,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 194 transitions. [2023-11-23 22:29:45,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 194 transitions. [2023-11-23 22:29:45,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:29:45,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 194 transitions. [2023-11-23 22:29:45,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 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) [2023-11-23 22:29:45,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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) [2023-11-23 22:29:45,688 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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) [2023-11-23 22:29:45,688 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 214 flow. Second operand 6 states and 194 transitions. [2023-11-23 22:29:45,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 434 flow [2023-11-23 22:29:45,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 379 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-23 22:29:45,719 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-11-23 22:29:45,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-11-23 22:29:45,720 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2023-11-23 22:29:45,721 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-11-23 22:29:45,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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) [2023-11-23 22:29:45,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-23 22:29:45,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-23 22:29:45,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-23 22:29:45,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-23 22:29:45,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-23 22:29:45,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-23 22:29:45,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-23 22:29:45,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-23 22:29:45,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-23 22:29:45,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-23 22:29:45,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-23 22:29:45,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-23 22:29:45,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-23 22:29:45,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-23 22:29:45,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-23 22:29:45,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-23 22:29:45,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-23 22:29:45,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-23 22:29:45,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-23 22:29:45,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-23 22:29:45,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:29:45,730 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-23 22:29:45,736 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:29:45,736 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:29:45,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:29:45 BasicIcfg [2023-11-23 22:29:45,742 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:29:45,743 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:29:45,743 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:29:45,743 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:29:45,744 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:35" (3/4) ... [2023-11-23 22:29:45,745 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:29:45,750 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-23 22:29:45,750 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-23 22:29:45,750 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-23 22:29:45,750 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-23 22:29:45,760 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2023-11-23 22:29:45,760 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-23 22:29:45,761 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 22:29:45,761 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 22:29:45,878 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:29:45,878 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:29:45,878 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:29:45,879 INFO L158 Benchmark]: Toolchain (without parser) took 12566.95ms. Allocated memory was 153.1MB in the beginning and 968.9MB in the end (delta: 815.8MB). Free memory was 119.3MB in the beginning and 386.2MB in the end (delta: -266.9MB). Peak memory consumption was 549.7MB. Max. memory is 16.1GB. [2023-11-23 22:29:45,879 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:29:45,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 834.47ms. Allocated memory is still 153.1MB. Free memory was 119.3MB in the beginning and 94.5MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 22:29:45,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.69ms. Allocated memory is still 153.1MB. Free memory was 94.5MB in the beginning and 91.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:29:45,881 INFO L158 Benchmark]: Boogie Preprocessor took 64.03ms. Allocated memory is still 153.1MB. Free memory was 91.7MB in the beginning and 87.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:29:45,881 INFO L158 Benchmark]: RCFGBuilder took 1255.81ms. Allocated memory is still 153.1MB. Free memory was 87.9MB in the beginning and 72.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 22:29:45,882 INFO L158 Benchmark]: TraceAbstraction took 10193.88ms. Allocated memory was 153.1MB in the beginning and 968.9MB in the end (delta: 815.8MB). Free memory was 71.4MB in the beginning and 391.4MB in the end (delta: -320.0MB). Peak memory consumption was 497.4MB. Max. memory is 16.1GB. [2023-11-23 22:29:45,882 INFO L158 Benchmark]: Witness Printer took 135.49ms. Allocated memory is still 968.9MB. Free memory was 391.4MB in the beginning and 386.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:29:45,884 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 834.47ms. Allocated memory is still 153.1MB. Free memory was 119.3MB in the beginning and 94.5MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.69ms. Allocated memory is still 153.1MB. Free memory was 94.5MB in the beginning and 91.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.03ms. Allocated memory is still 153.1MB. Free memory was 91.7MB in the beginning and 87.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1255.81ms. Allocated memory is still 153.1MB. Free memory was 87.9MB in the beginning and 72.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10193.88ms. Allocated memory was 153.1MB in the beginning and 968.9MB in the end (delta: 815.8MB). Free memory was 71.4MB in the beginning and 391.4MB in the end (delta: -320.0MB). Peak memory consumption was 497.4MB. Max. memory is 16.1GB. * Witness Printer took 135.49ms. Allocated memory is still 968.9MB. Free memory was 391.4MB in the beginning and 386.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 803]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 803]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 849]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 849]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 93 locations, 20 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: 10.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 205 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 2 mSDtfsCounter, 439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:29:45,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2818b70-edac-4b82-ab54-76335e82e737/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE