./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:07,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:07,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:01:07,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:07,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:07,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:07,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:07,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:07,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:07,293 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:07,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:07,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:07,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:07,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:07,296 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:07,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:07,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:07,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:07,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:07,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:07,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:07,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:07,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:07,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:07,305 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:07,306 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:01:07,306 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:07,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:07,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:07,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:07,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:07,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:07,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:07,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:07,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:07,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:07,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:07,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:07,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:07,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:07,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:07,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:07,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:07,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:07,313 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_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2024-10-31 22:01:07,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:07,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:07,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:07,629 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:07,630 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:07,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c Unable to find full path for "g++" [2024-10-31 22:01:09,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:10,138 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:10,140 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2024-10-31 22:01:10,152 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/data/0d457ea13/d1fb25e65bf2411082e1e0457589497a/FLAGec7613d21 [2024-10-31 22:01:10,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/data/0d457ea13/d1fb25e65bf2411082e1e0457589497a [2024-10-31 22:01:10,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:10,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:10,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:10,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:10,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:10,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3cc48d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10, skipping insertion in model container [2024-10-31 22:01:10,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:10,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:10,848 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:10,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:10,900 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:10,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10 WrapperNode [2024-10-31 22:01:10,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:10,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:10,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:10,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:10,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,965 INFO L138 Inliner]: procedures = 24, calls = 28, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 229 [2024-10-31 22:01:10,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:10,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:10,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:10,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:10,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:10,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,004 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-31 22:01:11,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:11,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:11,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:11,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:11,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (1/1) ... [2024-10-31 22:01:11,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:11,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:11,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:11,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:11,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:01:11,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:01:11,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:01:11,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:01:11,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:01:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:01:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:01:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:01:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:01:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:01:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:01:11,120 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:01:11,284 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:11,287 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:12,073 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:01:12,073 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:12,512 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:12,512 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:01:12,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:12 BoogieIcfgContainer [2024-10-31 22:01:12,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:12,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:12,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:12,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:12,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:10" (1/3) ... [2024-10-31 22:01:12,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64881e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:12, skipping insertion in model container [2024-10-31 22:01:12,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:10" (2/3) ... [2024-10-31 22:01:12,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64881e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:12, skipping insertion in model container [2024-10-31 22:01:12,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:12" (3/3) ... [2024-10-31 22:01:12,525 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2024-10-31 22:01:12,542 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:12,542 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-31 22:01:12,542 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:01:12,625 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:01:12,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 72 transitions, 158 flow [2024-10-31 22:01:12,754 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2024-10-31 22:01:12,755 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:01:12,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 8/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-10-31 22:01:12,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 72 transitions, 158 flow [2024-10-31 22:01:12,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 68 transitions, 145 flow [2024-10-31 22:01:12,781 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:12,791 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6523e865, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:12,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-31 22:01:12,795 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:12,795 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:01:12,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:12,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:12,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:01:12,797 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:12,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 734115, now seen corresponding path program 1 times [2024-10-31 22:01:12,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:12,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801679442] [2024-10-31 22:01:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:12,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:13,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801679442] [2024-10-31 22:01:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801679442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:13,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330003810] [2024-10-31 22:01:13,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:13,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:13,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-31 22:01:13,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:13,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:13,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-31 22:01:13,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:13,671 INFO L124 PetriNetUnfolderBase]: 285/771 cut-off events. [2024-10-31 22:01:13,671 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-31 22:01:13,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 771 events. 285/771 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4920 event pairs, 176 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 1156. Up to 443 conditions per place. [2024-10-31 22:01:13,688 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 33 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-10-31 22:01:13,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 237 flow [2024-10-31 22:01:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-10-31 22:01:13,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-10-31 22:01:13,708 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 145 flow. Second operand 4 states and 188 transitions. [2024-10-31 22:01:13,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 237 flow [2024-10-31 22:01:13,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:01:13,722 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 200 flow [2024-10-31 22:01:13,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-10-31 22:01:13,730 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2024-10-31 22:01:13,730 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 200 flow [2024-10-31 22:01:13,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:13,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:13,731 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:01:13,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:13,732 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:13,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash 395907990, now seen corresponding path program 1 times [2024-10-31 22:01:13,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:13,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627644114] [2024-10-31 22:01:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:13,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:13,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627644114] [2024-10-31 22:01:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627644114] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101993448] [2024-10-31 22:01:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:13,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:13,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:13,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:13,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:01:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:14,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:14,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:14,190 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:01:14,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101993448] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:14,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:01:14,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:01:14,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441082695] [2024-10-31 22:01:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:14,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:01:14,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-31 22:01:14,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:14,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:14,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-31 22:01:14,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:14,576 INFO L124 PetriNetUnfolderBase]: 285/769 cut-off events. [2024-10-31 22:01:14,576 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-31 22:01:14,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 769 events. 285/769 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4904 event pairs, 176 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 1206. Up to 433 conditions per place. [2024-10-31 22:01:14,584 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 26 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-10-31 22:01:14,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 268 flow [2024-10-31 22:01:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:01:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-10-31 22:01:14,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-31 22:01:14,588 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 200 flow. Second operand 6 states and 256 transitions. [2024-10-31 22:01:14,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 268 flow [2024-10-31 22:01:14,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:01:14,592 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 216 flow [2024-10-31 22:01:14,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-10-31 22:01:14,593 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-10-31 22:01:14,594 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 216 flow [2024-10-31 22:01:14,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:14,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:14,595 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:01:14,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:14,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-31 22:01:14,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:14,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash -611753468, now seen corresponding path program 1 times [2024-10-31 22:01:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970733680] [2024-10-31 22:01:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:14,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:15,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:15,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970733680] [2024-10-31 22:01:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970733680] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478045748] [2024-10-31 22:01:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:15,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:15,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:15,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:15,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:01:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:15,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:15,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:15,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:15,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478045748] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:15,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:15,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:01:15,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610365367] [2024-10-31 22:01:15,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:15,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:01:15,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:15,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:01:15,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:01:15,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-31 22:01:15,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:15,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:15,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-31 22:01:15,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:15,664 INFO L124 PetriNetUnfolderBase]: 291/793 cut-off events. [2024-10-31 22:01:15,664 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-31 22:01:15,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 793 events. 291/793 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5124 event pairs, 176 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 1208. Up to 444 conditions per place. [2024-10-31 22:01:15,673 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 31 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-10-31 22:01:15,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 442 flow [2024-10-31 22:01:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:01:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 422 transitions. [2024-10-31 22:01:15,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2024-10-31 22:01:15,678 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 216 flow. Second operand 10 states and 422 transitions. [2024-10-31 22:01:15,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 442 flow [2024-10-31 22:01:15,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 384 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-31 22:01:15,685 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 356 flow [2024-10-31 22:01:15,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-10-31 22:01:15,688 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2024-10-31 22:01:15,689 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 356 flow [2024-10-31 22:01:15,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:15,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:15,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:15,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:01:15,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-31 22:01:15,894 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:15,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:15,894 INFO L85 PathProgramCache]: Analyzing trace with hash -743585408, now seen corresponding path program 1 times [2024-10-31 22:01:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:15,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504867969] [2024-10-31 22:01:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:15,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:16,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:16,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504867969] [2024-10-31 22:01:16,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504867969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:16,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:16,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303363332] [2024-10-31 22:01:16,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:16,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:16,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:16,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:16,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-31 22:01:16,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:16,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:16,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-31 22:01:16,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:16,401 INFO L124 PetriNetUnfolderBase]: 550/1292 cut-off events. [2024-10-31 22:01:16,401 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-31 22:01:16,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1292 events. 550/1292 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8840 event pairs, 161 based on Foata normal form. 40/1067 useless extension candidates. Maximal degree in co-relation 2214. Up to 431 conditions per place. [2024-10-31 22:01:16,411 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 82 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2024-10-31 22:01:16,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 588 flow [2024-10-31 22:01:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-10-31 22:01:16,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-10-31 22:01:16,413 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 356 flow. Second operand 4 states and 202 transitions. [2024-10-31 22:01:16,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 588 flow [2024-10-31 22:01:16,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 564 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:16,420 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 366 flow [2024-10-31 22:01:16,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2024-10-31 22:01:16,421 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2024-10-31 22:01:16,422 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 366 flow [2024-10-31 22:01:16,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:16,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:16,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:16,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:01:16,422 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:16,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1576310376, now seen corresponding path program 1 times [2024-10-31 22:01:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002547194] [2024-10-31 22:01:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:16,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:16,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002547194] [2024-10-31 22:01:16,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002547194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:16,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:16,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:16,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787127506] [2024-10-31 22:01:16,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:16,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:16,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:16,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 72 [2024-10-31 22:01:16,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:16,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:16,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 72 [2024-10-31 22:01:16,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:16,789 INFO L124 PetriNetUnfolderBase]: 359/1011 cut-off events. [2024-10-31 22:01:16,790 INFO L125 PetriNetUnfolderBase]: For 255/279 co-relation queries the response was YES. [2024-10-31 22:01:16,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 1011 events. 359/1011 cut-off events. For 255/279 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6949 event pairs, 228 based on Foata normal form. 15/830 useless extension candidates. Maximal degree in co-relation 1792. Up to 563 conditions per place. [2024-10-31 22:01:16,799 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 47 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-10-31 22:01:16,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 90 transitions, 465 flow [2024-10-31 22:01:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-31 22:01:16,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-31 22:01:16,801 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 366 flow. Second operand 3 states and 156 transitions. [2024-10-31 22:01:16,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 90 transitions, 465 flow [2024-10-31 22:01:16,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:16,807 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 364 flow [2024-10-31 22:01:16,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-10-31 22:01:16,808 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2024-10-31 22:01:16,808 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 364 flow [2024-10-31 22:01:16,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:16,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:16,808 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:16,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:01:16,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:16,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1173233204, now seen corresponding path program 1 times [2024-10-31 22:01:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:16,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367223450] [2024-10-31 22:01:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:16,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:16,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367223450] [2024-10-31 22:01:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367223450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563889330] [2024-10-31 22:01:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:16,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:16,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:16,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:16,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:01:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:17,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:01:17,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:17,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:01:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563889330] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:17,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:01:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432873059] [2024-10-31 22:01:17,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:17,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:01:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:01:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:01:17,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-31 22:01:17,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 364 flow. Second operand has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:17,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:17,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-31 22:01:17,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:17,522 INFO L124 PetriNetUnfolderBase]: 355/1007 cut-off events. [2024-10-31 22:01:17,522 INFO L125 PetriNetUnfolderBase]: For 263/287 co-relation queries the response was YES. [2024-10-31 22:01:17,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 1007 events. 355/1007 cut-off events. For 263/287 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6850 event pairs, 228 based on Foata normal form. 17/829 useless extension candidates. Maximal degree in co-relation 1780. Up to 549 conditions per place. [2024-10-31 22:01:17,529 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 31 selfloop transitions, 21 changer transitions 0/86 dead transitions. [2024-10-31 22:01:17,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 444 flow [2024-10-31 22:01:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:01:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:01:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 298 transitions. [2024-10-31 22:01:17,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2024-10-31 22:01:17,531 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 364 flow. Second operand 7 states and 298 transitions. [2024-10-31 22:01:17,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 444 flow [2024-10-31 22:01:17,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:17,535 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 372 flow [2024-10-31 22:01:17,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2024-10-31 22:01:17,536 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2024-10-31 22:01:17,536 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 372 flow [2024-10-31 22:01:17,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:17,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:17,537 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:01:17,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:01:17,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:01:17,741 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:17,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1859144361, now seen corresponding path program 2 times [2024-10-31 22:01:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:17,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511578060] [2024-10-31 22:01:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:17,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:17,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511578060] [2024-10-31 22:01:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511578060] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449702700] [2024-10-31 22:01:17,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:01:17,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:17,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:17,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:17,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:01:18,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:01:18,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:18,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:18,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:01:18,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:01:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449702700] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:18,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-10-31 22:01:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809385083] [2024-10-31 22:01:18,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:18,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:01:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:01:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:01:18,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-31 22:01:18,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 372 flow. Second operand has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:18,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:18,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-31 22:01:18,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:18,663 INFO L124 PetriNetUnfolderBase]: 357/1009 cut-off events. [2024-10-31 22:01:18,663 INFO L125 PetriNetUnfolderBase]: For 289/313 co-relation queries the response was YES. [2024-10-31 22:01:18,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1009 events. 357/1009 cut-off events. For 289/313 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6855 event pairs, 228 based on Foata normal form. 15/828 useless extension candidates. Maximal degree in co-relation 1788. Up to 544 conditions per place. [2024-10-31 22:01:18,670 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 25 selfloop transitions, 29 changer transitions 0/88 dead transitions. [2024-10-31 22:01:18,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 488 flow [2024-10-31 22:01:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:01:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:01:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 522 transitions. [2024-10-31 22:01:18,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-10-31 22:01:18,673 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 372 flow. Second operand 13 states and 522 transitions. [2024-10-31 22:01:18,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 488 flow [2024-10-31 22:01:18,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 450 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-31 22:01:18,677 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 400 flow [2024-10-31 22:01:18,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=400, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-31 22:01:18,678 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-10-31 22:01:18,678 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 400 flow [2024-10-31 22:01:18,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:18,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:18,679 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:18,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:01:18,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:18,883 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:18,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash 219563508, now seen corresponding path program 2 times [2024-10-31 22:01:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:18,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086830221] [2024-10-31 22:01:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:01:19,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086830221] [2024-10-31 22:01:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086830221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163569291] [2024-10-31 22:01:19,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:01:19,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:19,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:19,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:19,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:01:19,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:01:19,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:19,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:01:19,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:01:19,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:01:19,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163569291] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:19,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:19,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-31 22:01:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040457017] [2024-10-31 22:01:19,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:19,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:01:19,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:01:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:01:19,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-10-31 22:01:19,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 400 flow. Second operand has 18 states, 18 states have (on average 37.44444444444444) internal successors, (674), 18 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:19,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:19,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-10-31 22:01:19,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:19,940 INFO L124 PetriNetUnfolderBase]: 353/1005 cut-off events. [2024-10-31 22:01:19,941 INFO L125 PetriNetUnfolderBase]: For 285/309 co-relation queries the response was YES. [2024-10-31 22:01:19,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 1005 events. 353/1005 cut-off events. For 285/309 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6795 event pairs, 228 based on Foata normal form. 15/825 useless extension candidates. Maximal degree in co-relation 1713. Up to 544 conditions per place. [2024-10-31 22:01:19,948 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 28 selfloop transitions, 22 changer transitions 0/84 dead transitions. [2024-10-31 22:01:19,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 84 transitions, 470 flow [2024-10-31 22:01:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:01:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:01:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 448 transitions. [2024-10-31 22:01:19,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2024-10-31 22:01:19,951 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 400 flow. Second operand 11 states and 448 transitions. [2024-10-31 22:01:19,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 84 transitions, 470 flow [2024-10-31 22:01:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 350 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-10-31 22:01:19,978 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 294 flow [2024-10-31 22:01:19,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=294, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2024-10-31 22:01:19,980 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-10-31 22:01:19,980 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 294 flow [2024-10-31 22:01:19,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 37.44444444444444) internal successors, (674), 18 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:19,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:19,981 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:20,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:01:20,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:20,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:20,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1007424076, now seen corresponding path program 3 times [2024-10-31 22:01:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:20,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29528500] [2024-10-31 22:01:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-31 22:01:21,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:21,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29528500] [2024-10-31 22:01:21,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29528500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:21,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410854970] [2024-10-31 22:01:21,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:01:21,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:21,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:21,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:21,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:01:22,041 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-31 22:01:22,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:22,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 22:01:22,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:22,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:01:22,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:01:22,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-31 22:01:22,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:01:22,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-31 22:01:22,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:01:22,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-31 22:01:22,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:01:22,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-10-31 22:01:22,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-31 22:01:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-31 22:01:22,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:23,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-31 22:01:23,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2024-10-31 22:01:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-31 22:01:23,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410854970] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:23,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:23,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 33 [2024-10-31 22:01:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574366423] [2024-10-31 22:01:23,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:23,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-31 22:01:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-31 22:01:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-10-31 22:01:23,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 72 [2024-10-31 22:01:23,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 294 flow. Second operand has 34 states, 34 states have (on average 34.294117647058826) internal successors, (1166), 34 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:23,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:23,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 72 [2024-10-31 22:01:23,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:25,176 INFO L124 PetriNetUnfolderBase]: 897/2326 cut-off events. [2024-10-31 22:01:25,176 INFO L125 PetriNetUnfolderBase]: For 536/540 co-relation queries the response was YES. [2024-10-31 22:01:25,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2326 events. 897/2326 cut-off events. For 536/540 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17219 event pairs, 207 based on Foata normal form. 4/1997 useless extension candidates. Maximal degree in co-relation 4304. Up to 471 conditions per place. [2024-10-31 22:01:25,195 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 80 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2024-10-31 22:01:25,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 147 transitions, 681 flow [2024-10-31 22:01:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:01:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 22:01:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 673 transitions. [2024-10-31 22:01:25,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5498366013071896 [2024-10-31 22:01:25,198 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 294 flow. Second operand 17 states and 673 transitions. [2024-10-31 22:01:25,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 147 transitions, 681 flow [2024-10-31 22:01:25,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 147 transitions, 637 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-31 22:01:25,204 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 382 flow [2024-10-31 22:01:25,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=382, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-10-31 22:01:25,205 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 28 predicate places. [2024-10-31 22:01:25,205 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 382 flow [2024-10-31 22:01:25,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 34.294117647058826) internal successors, (1166), 34 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:25,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:25,206 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:25,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:25,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:25,407 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:25,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1165406264, now seen corresponding path program 1 times [2024-10-31 22:01:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:25,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932771307] [2024-10-31 22:01:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:25,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-31 22:01:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:26,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932771307] [2024-10-31 22:01:26,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932771307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:26,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958789624] [2024-10-31 22:01:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:26,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:26,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:26,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:26,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:01:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:26,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-31 22:01:26,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:26,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:01:26,854 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:26,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-31 22:01:26,938 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:26,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-31 22:01:27,030 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:27,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-31 22:01:27,123 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:27,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-10-31 22:01:27,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-31 22:01:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-31 22:01:27,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:28,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-10-31 22:01:28,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2024-10-31 22:01:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-31 22:01:28,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958789624] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:28,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 9] total 34 [2024-10-31 22:01:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170353304] [2024-10-31 22:01:28,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:28,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-31 22:01:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:28,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-31 22:01:28,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2024-10-31 22:01:28,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 72 [2024-10-31 22:01:28,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 382 flow. Second operand has 35 states, 35 states have (on average 32.34285714285714) internal successors, (1132), 35 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:28,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:28,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 72 [2024-10-31 22:01:28,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:30,284 INFO L124 PetriNetUnfolderBase]: 1105/2452 cut-off events. [2024-10-31 22:01:30,284 INFO L125 PetriNetUnfolderBase]: For 1440/1448 co-relation queries the response was YES. [2024-10-31 22:01:30,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5357 conditions, 2452 events. 1105/2452 cut-off events. For 1440/1448 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16695 event pairs, 308 based on Foata normal form. 28/2177 useless extension candidates. Maximal degree in co-relation 2637. Up to 625 conditions per place. [2024-10-31 22:01:30,306 INFO L140 encePairwiseOnDemand]: 57/72 looper letters, 84 selfloop transitions, 35 changer transitions 0/148 dead transitions. [2024-10-31 22:01:30,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 148 transitions, 749 flow [2024-10-31 22:01:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:01:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 22:01:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-10-31 22:01:30,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-10-31 22:01:30,309 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 382 flow. Second operand 17 states and 639 transitions. [2024-10-31 22:01:30,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 148 transitions, 749 flow [2024-10-31 22:01:30,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 698 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-10-31 22:01:30,317 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 423 flow [2024-10-31 22:01:30,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=423, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2024-10-31 22:01:30,318 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 35 predicate places. [2024-10-31 22:01:30,318 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 423 flow [2024-10-31 22:01:30,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 32.34285714285714) internal successors, (1132), 35 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:30,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:30,320 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:30,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:01:30,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:30,524 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:30,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1861064877, now seen corresponding path program 1 times [2024-10-31 22:01:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543761120] [2024-10-31 22:01:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:30,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-31 22:01:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543761120] [2024-10-31 22:01:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543761120] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:30,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:30,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636071482] [2024-10-31 22:01:30,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:30,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:30,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:30,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-10-31 22:01:30,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:30,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:30,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-10-31 22:01:30,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:31,230 INFO L124 PetriNetUnfolderBase]: 1369/3225 cut-off events. [2024-10-31 22:01:31,230 INFO L125 PetriNetUnfolderBase]: For 3471/3552 co-relation queries the response was YES. [2024-10-31 22:01:31,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7391 conditions, 3225 events. 1369/3225 cut-off events. For 3471/3552 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24496 event pairs, 484 based on Foata normal form. 149/2854 useless extension candidates. Maximal degree in co-relation 6487. Up to 1123 conditions per place. [2024-10-31 22:01:31,256 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 101 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-10-31 22:01:31,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 137 transitions, 899 flow [2024-10-31 22:01:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:31,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:01:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-10-31 22:01:31,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-10-31 22:01:31,259 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 423 flow. Second operand 4 states and 200 transitions. [2024-10-31 22:01:31,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 137 transitions, 899 flow [2024-10-31 22:01:31,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 137 transitions, 815 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-10-31 22:01:31,268 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 395 flow [2024-10-31 22:01:31,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2024-10-31 22:01:31,268 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-10-31 22:01:31,268 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 395 flow [2024-10-31 22:01:31,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:31,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:31,269 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:31,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:01:31,269 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-10-31 22:01:31,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1858435522, now seen corresponding path program 1 times [2024-10-31 22:01:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:31,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789186140] [2024-10-31 22:01:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:31,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:01:32,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789186140] [2024-10-31 22:01:32,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789186140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:32,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477430309] [2024-10-31 22:01:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:32,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:32,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:32,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:32,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f26d1-8b1e-4021-a066-e1025ea8044c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:01:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:32,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-31 22:01:32,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:32,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-31 22:01:32,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:01:32,825 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:32,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-31 22:01:32,919 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:32,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-31 22:01:33,016 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:33,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-31 22:01:33,121 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-31 22:01:33,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2024-10-31 22:01:33,169 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:01:33,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-31 22:01:33,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:01:33,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:01:33,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:01:33,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:01:33,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-31 22:01:33,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-31 22:01:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:01:33,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:33,599 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_302 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_174| Int)) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_174| v_ArrVal_302) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_174|) 0)))) is different from false