./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:06,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:06,368 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:44:06,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:06,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:06,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:06,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:06,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:06,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:06,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:06,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:06,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:06,405 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:06,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:06,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:06,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:06,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:44:06,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:06,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:06,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:06,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:06,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:06,411 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:44:06,412 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:44:06,412 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:06,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:06,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:06,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:06,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:06,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:06,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:06,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:06,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:06,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:06,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:44:06,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:44:06,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:06,417 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:06,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:06,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:06,418 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:06,419 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_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2023-11-06 22:44:06,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:06,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:06,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:06,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:06,758 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:06,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-06 22:44:09,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:10,291 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:10,293 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-06 22:44:10,323 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/data/8db86dd1e/7776406263284bfc824f97f50d2129cd/FLAG8317ea3a1 [2023-11-06 22:44:10,342 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/data/8db86dd1e/7776406263284bfc824f97f50d2129cd [2023-11-06 22:44:10,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:10,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:10,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:10,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:10,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:10,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:10" (1/1) ... [2023-11-06 22:44:10,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc8e51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:10, skipping insertion in model container [2023-11-06 22:44:10,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:10" (1/1) ... [2023-11-06 22:44:10,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:10,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:11,079 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:11,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:11,245 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:11,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11 WrapperNode [2023-11-06 22:44:11,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:11,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:11,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:11,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:11,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,313 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2023-11-06 22:44:11,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:11,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:11,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:11,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:11,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:11,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:11,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:11,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:11,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (1/1) ... [2023-11-06 22:44:11,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:11,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:11,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:44:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:44:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-06 22:44:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-06 22:44:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:44:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:44:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-06 22:44:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-06 22:44:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:44:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:44:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:44:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:44:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:11,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:11,477 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:44:11,713 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:11,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:12,188 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:12,213 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:12,214 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:44:12,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:12 BoogieIcfgContainer [2023-11-06 22:44:12,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:12,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:12,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:12,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:12,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:10" (1/3) ... [2023-11-06 22:44:12,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba613f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:12, skipping insertion in model container [2023-11-06 22:44:12,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:11" (2/3) ... [2023-11-06 22:44:12,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba613f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:12, skipping insertion in model container [2023-11-06 22:44:12,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:12" (3/3) ... [2023-11-06 22:44:12,232 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-11-06 22:44:12,242 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:44:12,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:12,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 22:44:12,253 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:44:12,445 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:44:12,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 279 transitions, 578 flow [2023-11-06 22:44:12,712 INFO L124 PetriNetUnfolderBase]: 56/530 cut-off events. [2023-11-06 22:44:12,712 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:44:12,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 530 events. 56/530 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2265 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 264. Up to 8 conditions per place. [2023-11-06 22:44:12,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 279 transitions, 578 flow [2023-11-06 22:44:12,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 279 transitions, 578 flow [2023-11-06 22:44:12,744 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:44:12,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 279 transitions, 578 flow [2023-11-06 22:44:12,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 279 transitions, 578 flow [2023-11-06 22:44:12,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 279 transitions, 578 flow [2023-11-06 22:44:12,869 INFO L124 PetriNetUnfolderBase]: 56/530 cut-off events. [2023-11-06 22:44:12,869 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:44:12,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 530 events. 56/530 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2265 event pairs, 0 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 264. Up to 8 conditions per place. [2023-11-06 22:44:12,901 INFO L119 LiptonReduction]: Number of co-enabled transitions 25014 [2023-11-06 22:44:22,786 INFO L134 LiptonReduction]: Checked pairs total: 37575 [2023-11-06 22:44:22,786 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-11-06 22:44:22,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:22,810 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=LoopsAndPotentialCycles, 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;@73488a46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:22,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-06 22:44:22,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:44:22,814 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 22:44:22,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:44:22,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:22,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:44:22,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:22,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 35006, now seen corresponding path program 1 times [2023-11-06 22:44:22,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:22,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042801296] [2023-11-06 22:44:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:22,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:23,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:23,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042801296] [2023-11-06 22:44:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042801296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:23,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:23,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:44:23,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286693406] [2023-11-06 22:44:23,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:44:23,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:23,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:44:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:44:23,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 527 [2023-11-06 22:44:23,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 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) [2023-11-06 22:44:23,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:23,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 527 [2023-11-06 22:44:23,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:24,406 INFO L124 PetriNetUnfolderBase]: 4461/7396 cut-off events. [2023-11-06 22:44:24,407 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-06 22:44:24,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14534 conditions, 7396 events. 4461/7396 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 44612 event pairs, 4182 based on Foata normal form. 210/5681 useless extension candidates. Maximal degree in co-relation 12669. Up to 7047 conditions per place. [2023-11-06 22:44:24,465 INFO L140 encePairwiseOnDemand]: 515/527 looper letters, 62 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2023-11-06 22:44:24,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 284 flow [2023-11-06 22:44:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:44:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:44:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 582 transitions. [2023-11-06 22:44:24,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521821631878557 [2023-11-06 22:44:24,490 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 582 transitions. [2023-11-06 22:44:24,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 582 transitions. [2023-11-06 22:44:24,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:24,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 582 transitions. [2023-11-06 22:44:24,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 291.0) internal successors, (582), 2 states have internal predecessors, (582), 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) [2023-11-06 22:44:24,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 527.0) internal successors, (1581), 3 states have internal predecessors, (1581), 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) [2023-11-06 22:44:24,515 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 527.0) internal successors, (1581), 3 states have internal predecessors, (1581), 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) [2023-11-06 22:44:24,518 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 186 flow. Second operand 2 states and 582 transitions. [2023-11-06 22:44:24,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 284 flow [2023-11-06 22:44:24,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:44:24,531 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 160 flow [2023-11-06 22:44:24,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=160, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-11-06 22:44:24,539 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-11-06 22:44:24,539 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 160 flow [2023-11-06 22:44:24,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 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) [2023-11-06 22:44:24,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:24,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:44:24,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:44:24,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:24,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:24,543 INFO L85 PathProgramCache]: Analyzing trace with hash 35007, now seen corresponding path program 1 times [2023-11-06 22:44:24,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:24,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511291710] [2023-11-06 22:44:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:24,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:24,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:24,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511291710] [2023-11-06 22:44:24,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511291710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:24,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:24,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:44:24,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936415968] [2023-11-06 22:44:24,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:24,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:24,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:24,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 527 [2023-11-06 22:44:24,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2023-11-06 22:44:24,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:24,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 527 [2023-11-06 22:44:24,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:25,951 INFO L124 PetriNetUnfolderBase]: 4461/7395 cut-off events. [2023-11-06 22:44:25,951 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-06 22:44:25,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14533 conditions, 7395 events. 4461/7395 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 44582 event pairs, 4182 based on Foata normal form. 0/5471 useless extension candidates. Maximal degree in co-relation 14528. Up to 7044 conditions per place. [2023-11-06 22:44:26,008 INFO L140 encePairwiseOnDemand]: 524/527 looper letters, 59 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-06 22:44:26,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 280 flow [2023-11-06 22:44:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:44:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-11-06 22:44:26,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-11-06 22:44:26,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-11-06 22:44:26,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-11-06 22:44:26,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:26,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-11-06 22:44:26,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 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) [2023-11-06 22:44:26,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 527.0) internal successors, (2108), 4 states have internal predecessors, (2108), 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) [2023-11-06 22:44:26,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 527.0) internal successors, (2108), 4 states have internal predecessors, (2108), 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) [2023-11-06 22:44:26,028 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 160 flow. Second operand 3 states and 806 transitions. [2023-11-06 22:44:26,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 280 flow [2023-11-06 22:44:26,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:44:26,035 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 162 flow [2023-11-06 22:44:26,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-11-06 22:44:26,038 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 0 predicate places. [2023-11-06 22:44:26,041 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 162 flow [2023-11-06 22:44:26,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2023-11-06 22:44:26,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:26,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:44:26,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:44:26,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:26,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1042202805, now seen corresponding path program 1 times [2023-11-06 22:44:26,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:26,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252756553] [2023-11-06 22:44:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:26,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:26,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:26,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252756553] [2023-11-06 22:44:26,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252756553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:26,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:26,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:26,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324404270] [2023-11-06 22:44:26,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:26,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:26,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 527 [2023-11-06 22:44:26,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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) [2023-11-06 22:44:26,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:26,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 527 [2023-11-06 22:44:26,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:27,410 INFO L124 PetriNetUnfolderBase]: 4461/7396 cut-off events. [2023-11-06 22:44:27,411 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-06 22:44:27,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14538 conditions, 7396 events. 4461/7396 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 44599 event pairs, 4182 based on Foata normal form. 1/5474 useless extension candidates. Maximal degree in co-relation 14532. Up to 7046 conditions per place. [2023-11-06 22:44:27,465 INFO L140 encePairwiseOnDemand]: 524/527 looper letters, 60 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-06 22:44:27,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 288 flow [2023-11-06 22:44:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:44:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 807 transitions. [2023-11-06 22:44:27,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104364326375711 [2023-11-06 22:44:27,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 807 transitions. [2023-11-06 22:44:27,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 807 transitions. [2023-11-06 22:44:27,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:27,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 807 transitions. [2023-11-06 22:44:27,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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) [2023-11-06 22:44:27,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 527.0) internal successors, (2108), 4 states have internal predecessors, (2108), 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) [2023-11-06 22:44:27,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 527.0) internal successors, (2108), 4 states have internal predecessors, (2108), 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) [2023-11-06 22:44:27,479 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 162 flow. Second operand 3 states and 807 transitions. [2023-11-06 22:44:27,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 288 flow [2023-11-06 22:44:27,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:27,486 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 170 flow [2023-11-06 22:44:27,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-11-06 22:44:27,488 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2023-11-06 22:44:27,488 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 170 flow [2023-11-06 22:44:27,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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) [2023-11-06 22:44:27,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:27,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:44:27,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:44:27,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:27,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2000938453, now seen corresponding path program 1 times [2023-11-06 22:44:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337437099] [2023-11-06 22:44:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:27,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337437099] [2023-11-06 22:44:27,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337437099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770221482] [2023-11-06 22:44:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:27,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:27,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:27,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:27,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:27,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:27,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:27,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770221482] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:27,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 22:44:27,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621360747] [2023-11-06 22:44:27,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:27,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:27,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:27,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 527 [2023-11-06 22:44:27,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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) [2023-11-06 22:44:27,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:27,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 527 [2023-11-06 22:44:27,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:28,923 INFO L124 PetriNetUnfolderBase]: 4461/7399 cut-off events. [2023-11-06 22:44:28,923 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-06 22:44:28,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14551 conditions, 7399 events. 4461/7399 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 44578 event pairs, 4182 based on Foata normal form. 0/5475 useless extension candidates. Maximal degree in co-relation 14544. Up to 7046 conditions per place. [2023-11-06 22:44:28,964 INFO L140 encePairwiseOnDemand]: 524/527 looper letters, 60 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-11-06 22:44:28,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 312 flow [2023-11-06 22:44:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:44:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1550 transitions. [2023-11-06 22:44:28,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-11-06 22:44:28,971 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1550 transitions. [2023-11-06 22:44:28,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1550 transitions. [2023-11-06 22:44:28,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:28,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1550 transitions. [2023-11-06 22:44:28,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 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) [2023-11-06 22:44:28,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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) [2023-11-06 22:44:28,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 527.0) internal successors, (3689), 7 states have internal predecessors, (3689), 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) [2023-11-06 22:44:28,989 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 170 flow. Second operand 6 states and 1550 transitions. [2023-11-06 22:44:28,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 312 flow [2023-11-06 22:44:28,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 308 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:28,996 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 202 flow [2023-11-06 22:44:28,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-11-06 22:44:28,998 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-11-06 22:44:28,998 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 202 flow [2023-11-06 22:44:29,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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) [2023-11-06 22:44:29,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:29,004 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-06 22:44:29,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:29,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:29,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:29,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1486590411, now seen corresponding path program 2 times [2023-11-06 22:44:29,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:29,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784109788] [2023-11-06 22:44:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:29,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:44:29,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784109788] [2023-11-06 22:44:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784109788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:29,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:29,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:29,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125353800] [2023-11-06 22:44:29,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:29,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:29,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:29,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:29,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 527 [2023-11-06 22:44:29,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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) [2023-11-06 22:44:29,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:29,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 527 [2023-11-06 22:44:29,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:30,693 INFO L124 PetriNetUnfolderBase]: 4320/7031 cut-off events. [2023-11-06 22:44:30,694 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-06 22:44:30,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13920 conditions, 7031 events. 4320/7031 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 41719 event pairs, 2116 based on Foata normal form. 0/5254 useless extension candidates. Maximal degree in co-relation 13910. Up to 6766 conditions per place. [2023-11-06 22:44:30,736 INFO L140 encePairwiseOnDemand]: 522/527 looper letters, 69 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-06 22:44:30,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 356 flow [2023-11-06 22:44:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:44:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2023-11-06 22:44:30,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148640101201771 [2023-11-06 22:44:30,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2023-11-06 22:44:30,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2023-11-06 22:44:30,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:30,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2023-11-06 22:44:30,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 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) [2023-11-06 22:44:30,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 527.0) internal successors, (2108), 4 states have internal predecessors, (2108), 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) [2023-11-06 22:44:30,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 527.0) internal successors, (2108), 4 states have internal predecessors, (2108), 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) [2023-11-06 22:44:30,750 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 202 flow. Second operand 3 states and 814 transitions. [2023-11-06 22:44:30,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 356 flow [2023-11-06 22:44:30,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 342 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:30,755 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 192 flow [2023-11-06 22:44:30,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-11-06 22:44:30,758 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-11-06 22:44:30,758 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 192 flow [2023-11-06 22:44:30,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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) [2023-11-06 22:44:30,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:30,759 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:44:30,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:44:30,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:30,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1610795499, now seen corresponding path program 1 times [2023-11-06 22:44:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:30,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187357482] [2023-11-06 22:44:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:30,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:30,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187357482] [2023-11-06 22:44:30,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187357482] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:30,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898205026] [2023-11-06 22:44:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:30,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:30,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:30,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:31,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:31,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:44:31,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:31,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:31,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898205026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:31,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:31,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-06 22:44:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358542716] [2023-11-06 22:44:31,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:31,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:44:31,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:44:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:44:31,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 527 [2023-11-06 22:44:31,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 192 flow. Second operand has 12 states, 12 states have (on average 248.25) internal successors, (2979), 12 states have internal predecessors, (2979), 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) [2023-11-06 22:44:31,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:31,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 527 [2023-11-06 22:44:31,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:32,463 INFO L124 PetriNetUnfolderBase]: 4320/7072 cut-off events. [2023-11-06 22:44:32,464 INFO L125 PetriNetUnfolderBase]: For 245/245 co-relation queries the response was YES. [2023-11-06 22:44:32,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13999 conditions, 7072 events. 4320/7072 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 41843 event pairs, 4076 based on Foata normal form. 6/5297 useless extension candidates. Maximal degree in co-relation 13987. Up to 6772 conditions per place. [2023-11-06 22:44:32,523 INFO L140 encePairwiseOnDemand]: 524/527 looper letters, 58 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-11-06 22:44:32,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 77 transitions, 366 flow [2023-11-06 22:44:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:44:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:44:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3039 transitions. [2023-11-06 22:44:32,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480550284629981 [2023-11-06 22:44:32,537 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3039 transitions. [2023-11-06 22:44:32,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3039 transitions. [2023-11-06 22:44:32,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:32,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3039 transitions. [2023-11-06 22:44:32,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 253.25) internal successors, (3039), 12 states have internal predecessors, (3039), 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) [2023-11-06 22:44:32,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 527.0) internal successors, (6851), 13 states have internal predecessors, (6851), 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) [2023-11-06 22:44:32,569 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 527.0) internal successors, (6851), 13 states have internal predecessors, (6851), 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) [2023-11-06 22:44:32,569 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 192 flow. Second operand 12 states and 3039 transitions. [2023-11-06 22:44:32,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 77 transitions, 366 flow [2023-11-06 22:44:32,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:32,576 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 272 flow [2023-11-06 22:44:32,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2023-11-06 22:44:32,577 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 23 predicate places. [2023-11-06 22:44:32,577 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 272 flow [2023-11-06 22:44:32,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 248.25) internal successors, (2979), 12 states have internal predecessors, (2979), 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) [2023-11-06 22:44:32,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:32,579 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 22:44:32,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:32,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:44:32,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:32,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash -935324117, now seen corresponding path program 2 times [2023-11-06 22:44:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:32,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692473863] [2023-11-06 22:44:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692473863] [2023-11-06 22:44:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692473863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635092492] [2023-11-06 22:44:33,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:33,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:33,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:33,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:33,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:44:33,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:44:33,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:33,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:44:33,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:33,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635092492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:34,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-06 22:44:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487319962] [2023-11-06 22:44:34,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:34,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:44:34,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:34,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:44:34,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:44:34,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 527 [2023-11-06 22:44:34,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 272 flow. Second operand has 24 states, 24 states have (on average 248.125) internal successors, (5955), 24 states have internal predecessors, (5955), 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) [2023-11-06 22:44:34,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:34,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 527 [2023-11-06 22:44:34,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:35,477 INFO L124 PetriNetUnfolderBase]: 4320/7084 cut-off events. [2023-11-06 22:44:35,477 INFO L125 PetriNetUnfolderBase]: For 741/741 co-relation queries the response was YES. [2023-11-06 22:44:35,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14080 conditions, 7084 events. 4320/7084 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 41844 event pairs, 4076 based on Foata normal form. 12/5315 useless extension candidates. Maximal degree in co-relation 14062. Up to 6772 conditions per place. [2023-11-06 22:44:35,531 INFO L140 encePairwiseOnDemand]: 524/527 looper letters, 58 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-11-06 22:44:35,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 89 transitions, 530 flow [2023-11-06 22:44:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:44:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:44:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6021 transitions. [2023-11-06 22:44:35,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4760436432637571 [2023-11-06 22:44:35,569 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6021 transitions. [2023-11-06 22:44:35,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6021 transitions. [2023-11-06 22:44:35,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:35,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6021 transitions. [2023-11-06 22:44:35,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 250.875) internal successors, (6021), 24 states have internal predecessors, (6021), 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) [2023-11-06 22:44:35,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 527.0) internal successors, (13175), 25 states have internal predecessors, (13175), 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) [2023-11-06 22:44:35,628 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 527.0) internal successors, (13175), 25 states have internal predecessors, (13175), 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) [2023-11-06 22:44:35,628 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 272 flow. Second operand 24 states and 6021 transitions. [2023-11-06 22:44:35,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 89 transitions, 530 flow [2023-11-06 22:44:35,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 89 transitions, 458 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-06 22:44:35,636 INFO L231 Difference]: Finished difference. Result has 123 places, 89 transitions, 392 flow [2023-11-06 22:44:35,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=527, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=392, PETRI_PLACES=123, PETRI_TRANSITIONS=89} [2023-11-06 22:44:35,637 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 53 predicate places. [2023-11-06 22:44:35,637 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 89 transitions, 392 flow [2023-11-06 22:44:35,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 248.125) internal successors, (5955), 24 states have internal predecessors, (5955), 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) [2023-11-06 22:44:35,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:35,640 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-11-06 22:44:35,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:35,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:35,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-06 22:44:35,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1565531819, now seen corresponding path program 3 times [2023-11-06 22:44:35,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:35,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671048055] [2023-11-06 22:44:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:44:37,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671048055] [2023-11-06 22:44:37,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671048055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073368658] [2023-11-06 22:44:37,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:44:37,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:37,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:37,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:37,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c45ed634-91d0-4ba1-a66e-b8098db9fd52/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process