./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --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_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/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_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/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_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/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 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:04:29,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:04:30,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:04:30,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:04:30,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:04:30,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:04:30,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:04:30,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:04:30,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:04:30,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:04:30,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:04:30,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:04:30,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:04:30,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:04:30,070 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:04:30,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:04:30,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:04:30,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:04:30,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:04:30,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:04:30,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:04:30,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:04:30,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:04:30,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:04:30,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:04:30,078 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:04:30,079 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:04:30,079 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:04:30,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:04:30,080 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:04:30,080 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:04:30,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:04:30,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:04:30,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:04:30,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:30,082 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:04:30,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:04:30,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:04:30,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:04:30,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:04:30,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:04:30,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:04:30,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:04:30,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:04:30,087 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_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 [2024-10-31 22:04:30,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:04:30,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:04:30,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:04:30,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:04:30,380 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:04:30,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i Unable to find full path for "g++" [2024-10-31 22:04:32,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:04:32,684 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:04:32,685 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-10-31 22:04:32,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/data/71f2626a5/49718500147d49ab9cbbdea2be577af5/FLAG246288d30 [2024-10-31 22:04:32,717 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/data/71f2626a5/49718500147d49ab9cbbdea2be577af5 [2024-10-31 22:04:32,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:04:32,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:04:32,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:32,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:04:32,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:04:32,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:32" (1/1) ... [2024-10-31 22:04:32,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632bc275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:32, skipping insertion in model container [2024-10-31 22:04:32,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:32" (1/1) ... [2024-10-31 22:04:32,797 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:04:33,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:33,324 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:04:33,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:33,440 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:04:33,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33 WrapperNode [2024-10-31 22:04:33,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:33,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:33,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:04:33,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:04:33,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,496 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-10-31 22:04:33,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:33,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:04:33,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:04:33,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:04:33,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,531 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 5, 8]. 53 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 1 writes are split as follows [0, 0, 1]. [2024-10-31 22:04:33,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,532 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:04:33,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:04:33,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:04:33,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:04:33,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (1/1) ... [2024-10-31 22:04:33,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:33,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:33,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:04:33,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:04:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:04:33,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:04:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:04:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:04:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:04:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:04:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:04:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:04:33,637 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 22:04:33,777 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:04:33,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:04:34,052 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:04:34,052 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:04:34,288 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:04:34,288 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:04:34,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:34 BoogieIcfgContainer [2024-10-31 22:04:34,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:04:34,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:04:34,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:04:34,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:04:34,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:04:32" (1/3) ... [2024-10-31 22:04:34,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c03a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:34, skipping insertion in model container [2024-10-31 22:04:34,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:33" (2/3) ... [2024-10-31 22:04:34,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c03a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:34, skipping insertion in model container [2024-10-31 22:04:34,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:34" (3/3) ... [2024-10-31 22:04:34,298 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-10-31 22:04:34,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:04:34,317 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-31 22:04:34,318 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:04:34,368 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:04:34,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 33 transitions, 70 flow [2024-10-31 22:04:34,427 INFO L124 PetriNetUnfolderBase]: 3/35 cut-off events. [2024-10-31 22:04:34,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:04:34,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 35 events. 3/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-31 22:04:34,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 33 transitions, 70 flow [2024-10-31 22:04:34,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 33 transitions, 70 flow [2024-10-31 22:04:34,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:34,452 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;@598bd95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:34,453 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-31 22:04:34,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:04:34,460 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:04:34,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:04:34,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:34,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:04:34,462 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-31 22:04:34,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:34,467 INFO L85 PathProgramCache]: Analyzing trace with hash 302535, now seen corresponding path program 1 times [2024-10-31 22:04:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:34,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186087636] [2024-10-31 22:04:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:34,794 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 22:04:34,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186087636] [2024-10-31 22:04:34,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186087636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:34,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:34,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:34,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040835809] [2024-10-31 22:04:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:34,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:34,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:34,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:34,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-31 22:04:34,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 22:04:34,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:34,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-31 22:04:34,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:34,993 INFO L124 PetriNetUnfolderBase]: 24/88 cut-off events. [2024-10-31 22:04:34,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:04:34,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 88 events. 24/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 20 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 127. Up to 64 conditions per place. [2024-10-31 22:04:34,996 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 19 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-10-31 22:04:34,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 114 flow [2024-10-31 22:04:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-10-31 22:04:35,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-10-31 22:04:35,011 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 70 flow. Second operand 4 states and 71 transitions. [2024-10-31 22:04:35,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 114 flow [2024-10-31 22:04:35,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:04:35,018 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 90 flow [2024-10-31 22:04:35,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-10-31 22:04:35,025 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-10-31 22:04:35,026 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 90 flow [2024-10-31 22:04:35,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 22:04:35,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:35,026 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:04:35,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:04:35,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-31 22:04:35,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:35,029 INFO L85 PathProgramCache]: Analyzing trace with hash 423187167, now seen corresponding path program 1 times [2024-10-31 22:04:35,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:35,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103717021] [2024-10-31 22:04:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:35,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,217 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 22:04:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103717021] [2024-10-31 22:04:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103717021] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:35,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590010992] [2024-10-31 22:04:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:35,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:35,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:35,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:35,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:04:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:04:35,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:35,411 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 22:04:35,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:35,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590010992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:35,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:35,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:04:35,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029437134] [2024-10-31 22:04:35,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:35,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:35,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-31 22:04:35,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 22:04:35,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:35,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-31 22:04:35,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:35,579 INFO L124 PetriNetUnfolderBase]: 24/87 cut-off events. [2024-10-31 22:04:35,579 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:04:35,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 87 events. 24/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 150. Up to 59 conditions per place. [2024-10-31 22:04:35,581 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 15 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-10-31 22:04:35,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 128 flow [2024-10-31 22:04:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:04:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-10-31 22:04:35,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-31 22:04:35,584 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 90 flow. Second operand 6 states and 88 transitions. [2024-10-31 22:04:35,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 128 flow [2024-10-31 22:04:35,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:35,591 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2024-10-31 22:04:35,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-10-31 22:04:35,592 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-31 22:04:35,592 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2024-10-31 22:04:35,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 22:04:35,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:35,593 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:04:35,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:04:35,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:35,794 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-31 22:04:35,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash 233900593, now seen corresponding path program 1 times [2024-10-31 22:04:35,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:35,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512912002] [2024-10-31 22:04:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:35,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:35,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512912002] [2024-10-31 22:04:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512912002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408125531] [2024-10-31 22:04:35,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:35,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:35,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-31 22:04:35,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:04:35,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:35,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-31 22:04:35,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:36,003 INFO L124 PetriNetUnfolderBase]: 24/86 cut-off events. [2024-10-31 22:04:36,003 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:04:36,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 86 events. 24/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 20 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 146. Up to 62 conditions per place. [2024-10-31 22:04:36,005 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 16 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-10-31 22:04:36,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 132 flow [2024-10-31 22:04:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-31 22:04:36,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-10-31 22:04:36,008 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 3 states and 52 transitions. [2024-10-31 22:04:36,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 132 flow [2024-10-31 22:04:36,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 110 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 22:04:36,010 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 78 flow [2024-10-31 22:04:36,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-10-31 22:04:36,015 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-10-31 22:04:36,015 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 78 flow [2024-10-31 22:04:36,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:04:36,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:36,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:36,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:04:36,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-31 22:04:36,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1441491304, now seen corresponding path program 1 times [2024-10-31 22:04:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740109547] [2024-10-31 22:04:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:36,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740109547] [2024-10-31 22:04:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740109547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957171558] [2024-10-31 22:04:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:36,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:36,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:36,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:36,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:04:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:36,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:04:36,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:36,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957171558] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:36,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:36,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:04:36,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443075124] [2024-10-31 22:04:36,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:36,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:04:36,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:36,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:04:36,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:04:36,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-31 22:04:36,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 22:04:36,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:36,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-31 22:04:36,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:36,487 INFO L124 PetriNetUnfolderBase]: 24/90 cut-off events. [2024-10-31 22:04:36,487 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-31 22:04:36,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 90 events. 24/90 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 20 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 139. Up to 60 conditions per place. [2024-10-31 22:04:36,488 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2024-10-31 22:04:36,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 139 flow [2024-10-31 22:04:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:04:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:04:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-10-31 22:04:36,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-10-31 22:04:36,492 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 78 flow. Second operand 7 states and 102 transitions. [2024-10-31 22:04:36,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 139 flow [2024-10-31 22:04:36,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:36,494 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 104 flow [2024-10-31 22:04:36,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-10-31 22:04:36,497 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-10-31 22:04:36,497 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 104 flow [2024-10-31 22:04:36,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 22:04:36,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:36,498 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:36,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:04:36,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:36,699 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-31 22:04:36,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1254322792, now seen corresponding path program 2 times [2024-10-31 22:04:36,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:36,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477584047] [2024-10-31 22:04:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:36,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:36,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:04:36,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477584047] [2024-10-31 22:04:36,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477584047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:36,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:36,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:36,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365160929] [2024-10-31 22:04:36,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:36,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:36,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-31 22:04:36,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 22:04:36,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:36,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-31 22:04:36,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:36,864 INFO L124 PetriNetUnfolderBase]: 26/97 cut-off events. [2024-10-31 22:04:36,865 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-31 22:04:36,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 97 events. 26/97 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 199 event pairs, 2 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 153. Up to 53 conditions per place. [2024-10-31 22:04:36,866 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-10-31 22:04:36,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 158 flow [2024-10-31 22:04:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:36,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-10-31 22:04:36,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-31 22:04:36,868 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 104 flow. Second operand 3 states and 55 transitions. [2024-10-31 22:04:36,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 158 flow [2024-10-31 22:04:36,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:36,870 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 102 flow [2024-10-31 22:04:36,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-10-31 22:04:36,871 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-31 22:04:36,872 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 102 flow [2024-10-31 22:04:36,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 22:04:36,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:36,872 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-31 22:04:36,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:04:36,873 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-31 22:04:36,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash 229275648, now seen corresponding path program 1 times [2024-10-31 22:04:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434622017] [2024-10-31 22:04:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:37,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:37,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434622017] [2024-10-31 22:04:37,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434622017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:37,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144514590] [2024-10-31 22:04:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:37,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:37,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:37,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:37,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:04:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:37,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:04:37,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:37,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:37,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144514590] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:37,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:37,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-31 22:04:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049287389] [2024-10-31 22:04:37,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:37,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:04:37,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:04:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:04:37,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-31 22:04:37,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 102 flow. Second operand has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 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 22:04:37,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:37,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-31 22:04:37,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:37,544 INFO L124 PetriNetUnfolderBase]: 24/98 cut-off events. [2024-10-31 22:04:37,544 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-31 22:04:37,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 98 events. 24/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 20 based on Foata normal form. 3/93 useless extension candidates. Maximal degree in co-relation 146. Up to 60 conditions per place. [2024-10-31 22:04:37,546 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 16 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2024-10-31 22:04:37,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 196 flow [2024-10-31 22:04:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:04:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:04:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 175 transitions. [2024-10-31 22:04:37,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40792540792540793 [2024-10-31 22:04:37,548 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 102 flow. Second operand 13 states and 175 transitions. [2024-10-31 22:04:37,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 196 flow [2024-10-31 22:04:37,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:37,551 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 175 flow [2024-10-31 22:04:37,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=175, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-10-31 22:04:37,552 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-10-31 22:04:37,552 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 175 flow [2024-10-31 22:04:37,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 15 states have internal predecessors, (185), 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 22:04:37,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:37,553 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2024-10-31 22:04:37,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:04:37,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:04:37,757 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-10-31 22:04:37,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1450152680, now seen corresponding path program 2 times [2024-10-31 22:04:37,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:37,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616536002] [2024-10-31 22:04:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:37,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:04:37,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:04:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:04:37,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:04:37,858 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:04:37,860 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-31 22:04:37,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-31 22:04:37,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-31 22:04:37,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-31 22:04:37,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-31 22:04:37,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-31 22:04:37,863 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-10-31 22:04:37,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-31 22:04:37,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-31 22:04:37,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-31 22:04:37,865 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-31 22:04:37,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:04:37,865 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-31 22:04:37,868 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:04:37,868 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:04:37,902 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:04:37,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 55 transitions, 120 flow [2024-10-31 22:04:37,930 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2024-10-31 22:04:37,931 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:04:37,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 60 events. 5/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2024-10-31 22:04:37,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 55 transitions, 120 flow [2024-10-31 22:04:37,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 55 transitions, 120 flow [2024-10-31 22:04:37,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:37,936 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;@598bd95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:37,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-31 22:04:37,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:04:37,940 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:04:37,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:04:37,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:37,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:04:37,944 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:37,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 357150, now seen corresponding path program 1 times [2024-10-31 22:04:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:37,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999590478] [2024-10-31 22:04:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:37,990 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 22:04:37,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999590478] [2024-10-31 22:04:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999590478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:37,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:37,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:37,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765849511] [2024-10-31 22:04:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:37,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:38,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:38,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:38,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:38,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:38,276 INFO L124 PetriNetUnfolderBase]: 640/1334 cut-off events. [2024-10-31 22:04:38,277 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-31 22:04:38,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 1334 events. 640/1334 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7514 event pairs, 570 based on Foata normal form. 70/1293 useless extension candidates. Maximal degree in co-relation 1594. Up to 1043 conditions per place. [2024-10-31 22:04:38,291 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 31 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-10-31 22:04:38,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 186 flow [2024-10-31 22:04:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-31 22:04:38,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-31 22:04:38,293 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 120 flow. Second operand 4 states and 120 transitions. [2024-10-31 22:04:38,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 186 flow [2024-10-31 22:04:38,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:04:38,296 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 138 flow [2024-10-31 22:04:38,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-31 22:04:38,297 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-10-31 22:04:38,298 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 138 flow [2024-10-31 22:04:38,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:38,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:38,299 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:04:38,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:04:38,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:38,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:38,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2050277247, now seen corresponding path program 1 times [2024-10-31 22:04:38,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:38,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167439099] [2024-10-31 22:04:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:38,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,379 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 22:04:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167439099] [2024-10-31 22:04:38,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167439099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198458553] [2024-10-31 22:04:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:38,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:38,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:38,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:38,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:04:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:04:38,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:38,500 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 22:04:38,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:38,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198458553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:38,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:38,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:04:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289407288] [2024-10-31 22:04:38,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:38,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:38,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:38,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 22:04:38,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:38,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:38,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:38,827 INFO L124 PetriNetUnfolderBase]: 640/1333 cut-off events. [2024-10-31 22:04:38,827 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-31 22:04:38,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 1333 events. 640/1333 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7536 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2408. Up to 1038 conditions per place. [2024-10-31 22:04:38,838 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 27 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-10-31 22:04:38,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 200 flow [2024-10-31 22:04:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:04:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-10-31 22:04:38,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-31 22:04:38,840 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 138 flow. Second operand 6 states and 154 transitions. [2024-10-31 22:04:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 200 flow [2024-10-31 22:04:38,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:38,843 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 144 flow [2024-10-31 22:04:38,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-10-31 22:04:38,844 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-31 22:04:38,844 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 144 flow [2024-10-31 22:04:38,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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 22:04:38,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:38,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:04:38,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:04:39,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-31 22:04:39,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:39,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash -865914424, now seen corresponding path program 1 times [2024-10-31 22:04:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577367380] [2024-10-31 22:04:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577367380] [2024-10-31 22:04:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577367380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086628269] [2024-10-31 22:04:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:39,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:39,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:39,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 22:04:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:39,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:39,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:39,327 INFO L124 PetriNetUnfolderBase]: 640/1332 cut-off events. [2024-10-31 22:04:39,327 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-31 22:04:39,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 1332 events. 640/1332 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7547 event pairs, 570 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 2404. Up to 1041 conditions per place. [2024-10-31 22:04:39,337 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 28 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-10-31 22:04:39,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 204 flow [2024-10-31 22:04:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-31 22:04:39,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-10-31 22:04:39,339 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 144 flow. Second operand 3 states and 91 transitions. [2024-10-31 22:04:39,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 204 flow [2024-10-31 22:04:39,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 182 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 22:04:39,341 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 126 flow [2024-10-31 22:04:39,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-31 22:04:39,342 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-10-31 22:04:39,342 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 126 flow [2024-10-31 22:04:39,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 22:04:39,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:39,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:39,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:04:39,343 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:39,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:39,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1081237396, now seen corresponding path program 1 times [2024-10-31 22:04:39,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:39,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402028771] [2024-10-31 22:04:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:39,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:39,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402028771] [2024-10-31 22:04:39,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402028771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:39,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577267125] [2024-10-31 22:04:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:39,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:39,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:39,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:39,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:04:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:04:39,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:39,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577267125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:39,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:04:39,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514145388] [2024-10-31 22:04:39,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:39,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:04:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:39,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:04:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:04:39,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:39,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 126 flow. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 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 22:04:39,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:39,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:39,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:39,850 INFO L124 PetriNetUnfolderBase]: 640/1336 cut-off events. [2024-10-31 22:04:39,850 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-31 22:04:39,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1336 events. 640/1336 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7525 event pairs, 570 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 2397. Up to 1039 conditions per place. [2024-10-31 22:04:39,859 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-10-31 22:04:39,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 211 flow [2024-10-31 22:04:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:04:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:04:39,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-10-31 22:04:39,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597402597402597 [2024-10-31 22:04:39,860 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 126 flow. Second operand 7 states and 177 transitions. [2024-10-31 22:04:39,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 211 flow [2024-10-31 22:04:39,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:39,863 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 152 flow [2024-10-31 22:04:39,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=152, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-10-31 22:04:39,864 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-10-31 22:04:39,864 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 152 flow [2024-10-31 22:04:39,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 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 22:04:39,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:39,865 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:39,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:04:40,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:40,065 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:40,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:40,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1750020084, now seen corresponding path program 2 times [2024-10-31 22:04:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:40,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055832900] [2024-10-31 22:04:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:40,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:04:40,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055832900] [2024-10-31 22:04:40,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055832900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:40,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:40,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:40,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681568740] [2024-10-31 22:04:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:40,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:40,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:40,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 22:04:40,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:40,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:40,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:40,390 INFO L124 PetriNetUnfolderBase]: 698/1432 cut-off events. [2024-10-31 22:04:40,390 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-31 22:04:40,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1432 events. 698/1432 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8011 event pairs, 291 based on Foata normal form. 36/1390 useless extension candidates. Maximal degree in co-relation 2592. Up to 976 conditions per place. [2024-10-31 22:04:40,401 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 48 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-31 22:04:40,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 283 flow [2024-10-31 22:04:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-31 22:04:40,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-10-31 22:04:40,403 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 152 flow. Second operand 3 states and 106 transitions. [2024-10-31 22:04:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 283 flow [2024-10-31 22:04:40,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:40,408 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 150 flow [2024-10-31 22:04:40,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-10-31 22:04:40,409 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-10-31 22:04:40,409 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 150 flow [2024-10-31 22:04:40,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 22:04:40,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:40,409 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:40,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:04:40,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:40,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:40,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1583951849, now seen corresponding path program 1 times [2024-10-31 22:04:40,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:40,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091133824] [2024-10-31 22:04:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:40,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:04:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091133824] [2024-10-31 22:04:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091133824] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:40,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:40,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:40,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534328959] [2024-10-31 22:04:40,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:40,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:40,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:40,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:40,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:40,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:40,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 22:04:40,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:40,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:40,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:40,740 INFO L124 PetriNetUnfolderBase]: 640/1326 cut-off events. [2024-10-31 22:04:40,740 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-31 22:04:40,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 1326 events. 640/1326 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7250 event pairs, 264 based on Foata normal form. 36/1290 useless extension candidates. Maximal degree in co-relation 2461. Up to 882 conditions per place. [2024-10-31 22:04:40,748 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-10-31 22:04:40,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 279 flow [2024-10-31 22:04:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-31 22:04:40,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-31 22:04:40,749 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 150 flow. Second operand 3 states and 105 transitions. [2024-10-31 22:04:40,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 279 flow [2024-10-31 22:04:40,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:40,751 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 148 flow [2024-10-31 22:04:40,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-10-31 22:04:40,752 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-10-31 22:04:40,752 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 148 flow [2024-10-31 22:04:40,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 22:04:40,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:40,753 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:40,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:04:40,753 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:40,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1803873116, now seen corresponding path program 1 times [2024-10-31 22:04:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616897595] [2024-10-31 22:04:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-31 22:04:40,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616897595] [2024-10-31 22:04:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616897595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935891586] [2024-10-31 22:04:40,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:40,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:40,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:40,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:40,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 22:04:40,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:40,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:40,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:41,044 INFO L124 PetriNetUnfolderBase]: 695/1416 cut-off events. [2024-10-31 22:04:41,044 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-10-31 22:04:41,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1416 events. 695/1416 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7819 event pairs, 102 based on Foata normal form. 33/1401 useless extension candidates. Maximal degree in co-relation 2645. Up to 913 conditions per place. [2024-10-31 22:04:41,053 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 47 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-10-31 22:04:41,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 274 flow [2024-10-31 22:04:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:41,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-31 22:04:41,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-31 22:04:41,054 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 148 flow. Second operand 3 states and 105 transitions. [2024-10-31 22:04:41,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 274 flow [2024-10-31 22:04:41,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:41,057 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 146 flow [2024-10-31 22:04:41,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-10-31 22:04:41,057 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-10-31 22:04:41,058 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 146 flow [2024-10-31 22:04:41,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 22:04:41,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:41,058 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-31 22:04:41,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:04:41,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:41,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:41,059 INFO L85 PathProgramCache]: Analyzing trace with hash -85516912, now seen corresponding path program 1 times [2024-10-31 22:04:41,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:41,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725509866] [2024-10-31 22:04:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:41,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 22:04:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725509866] [2024-10-31 22:04:41,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725509866] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384894995] [2024-10-31 22:04:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:41,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:41,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:41,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:41,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:04:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:41,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:04:41,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 22:04:41,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 22:04:41,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384894995] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:41,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:41,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-31 22:04:41,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182981074] [2024-10-31 22:04:41,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:41,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:04:41,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:41,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:04:41,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:04:41,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-10-31 22:04:41,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 146 flow. Second operand has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 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 22:04:41,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:41,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-10-31 22:04:41,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:41,851 INFO L124 PetriNetUnfolderBase]: 640/1331 cut-off events. [2024-10-31 22:04:41,851 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-31 22:04:41,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1331 events. 640/1331 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7403 event pairs, 570 based on Foata normal form. 3/1239 useless extension candidates. Maximal degree in co-relation 2451. Up to 1039 conditions per place. [2024-10-31 22:04:41,860 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 28 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-10-31 22:04:41,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 264 flow [2024-10-31 22:04:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:04:41,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:04:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 304 transitions. [2024-10-31 22:04:41,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4251748251748252 [2024-10-31 22:04:41,865 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 146 flow. Second operand 13 states and 304 transitions. [2024-10-31 22:04:41,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 264 flow [2024-10-31 22:04:41,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 58 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:41,869 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 219 flow [2024-10-31 22:04:41,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=219, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-10-31 22:04:41,870 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-10-31 22:04:41,870 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 219 flow [2024-10-31 22:04:41,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 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 22:04:41,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:41,871 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2024-10-31 22:04:41,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:04:42,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-31 22:04:42,076 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-10-31 22:04:42,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1711516783, now seen corresponding path program 2 times [2024-10-31 22:04:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:42,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187661433] [2024-10-31 22:04:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:04:42,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:04:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:04:42,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:04:42,141 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:04:42,142 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-31 22:04:42,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-10-31 22:04:42,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-10-31 22:04:42,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-10-31 22:04:42,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-10-31 22:04:42,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-10-31 22:04:42,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-10-31 22:04:42,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-10-31 22:04:42,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-10-31 22:04:42,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-10-31 22:04:42,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-10-31 22:04:42,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-10-31 22:04:42,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-10-31 22:04:42,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-10-31 22:04:42,144 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-10-31 22:04:42,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:04:42,144 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:04:42,144 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:04:42,145 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:04:42,181 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:04:42,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 172 flow [2024-10-31 22:04:42,193 INFO L124 PetriNetUnfolderBase]: 7/85 cut-off events. [2024-10-31 22:04:42,193 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:04:42,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2024-10-31 22:04:42,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 172 flow [2024-10-31 22:04:42,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 172 flow [2024-10-31 22:04:42,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:42,196 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;@598bd95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:42,196 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-31 22:04:42,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:04:42,198 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:04:42,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:04:42,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:42,198 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:04:42,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:04:42,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:42,199 INFO L85 PathProgramCache]: Analyzing trace with hash 433611, now seen corresponding path program 1 times [2024-10-31 22:04:42,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:42,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483152834] [2024-10-31 22:04:42,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:42,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,232 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 22:04:42,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483152834] [2024-10-31 22:04:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483152834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:42,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:42,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797013528] [2024-10-31 22:04:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:42,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:42,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:42,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:04:42,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 22:04:42,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:42,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:04:42,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:44,904 INFO L124 PetriNetUnfolderBase]: 11409/19193 cut-off events. [2024-10-31 22:04:44,904 INFO L125 PetriNetUnfolderBase]: For 799/799 co-relation queries the response was YES. [2024-10-31 22:04:44,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35523 conditions, 19193 events. 11409/19193 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146550 event pairs, 10250 based on Foata normal form. 1159/19041 useless extension candidates. Maximal degree in co-relation 15025. Up to 15805 conditions per place. [2024-10-31 22:04:45,075 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 43 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-10-31 22:04:45,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 260 flow [2024-10-31 22:04:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-10-31 22:04:45,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487012987012987 [2024-10-31 22:04:45,153 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 172 flow. Second operand 4 states and 169 transitions. [2024-10-31 22:04:45,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 260 flow [2024-10-31 22:04:45,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 258 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:04:45,160 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 186 flow [2024-10-31 22:04:45,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-10-31 22:04:45,161 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-31 22:04:45,161 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 186 flow [2024-10-31 22:04:45,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 22:04:45,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:45,161 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:04:45,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:04:45,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:04:45,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash 33236063, now seen corresponding path program 1 times [2024-10-31 22:04:45,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119489963] [2024-10-31 22:04:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:45,289 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 22:04:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119489963] [2024-10-31 22:04:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119489963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000582163] [2024-10-31 22:04:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:45,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:45,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:45,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:45,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:04:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:45,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:04:45,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:45,452 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 22:04:45,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:45,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000582163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:45,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:45,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:04:45,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228324333] [2024-10-31 22:04:45,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:45,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:45,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:45,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:45,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:45,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:04:45,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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 22:04:45,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:45,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:04:45,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:47,885 INFO L124 PetriNetUnfolderBase]: 11409/19192 cut-off events. [2024-10-31 22:04:47,886 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2024-10-31 22:04:47,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35412 conditions, 19192 events. 11409/19192 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146540 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35392. Up to 15800 conditions per place. [2024-10-31 22:04:48,037 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 39 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-10-31 22:04:48,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 272 flow [2024-10-31 22:04:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:04:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:04:48,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-10-31 22:04:48,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-31 22:04:48,040 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 186 flow. Second operand 6 states and 220 transitions. [2024-10-31 22:04:48,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 272 flow [2024-10-31 22:04:48,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:04:48,044 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 192 flow [2024-10-31 22:04:48,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-10-31 22:04:48,045 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-31 22:04:48,046 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 192 flow [2024-10-31 22:04:48,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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 22:04:48,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:48,047 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:04:48,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:04:48,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-31 22:04:48,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:04:48,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:48,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1030318389, now seen corresponding path program 1 times [2024-10-31 22:04:48,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:48,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425290754] [2024-10-31 22:04:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:04:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425290754] [2024-10-31 22:04:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425290754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:48,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:48,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523495624] [2024-10-31 22:04:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:48,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:48,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:04:48,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:04:48,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:48,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:04:48,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:50,347 INFO L124 PetriNetUnfolderBase]: 11409/19191 cut-off events. [2024-10-31 22:04:50,347 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2024-10-31 22:04:50,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35414 conditions, 19191 events. 11409/19191 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146566 event pairs, 10250 based on Foata normal form. 1/17882 useless extension candidates. Maximal degree in co-relation 35388. Up to 15803 conditions per place. [2024-10-31 22:04:50,472 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 40 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2024-10-31 22:04:50,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 73 transitions, 276 flow [2024-10-31 22:04:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-10-31 22:04:50,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5627705627705628 [2024-10-31 22:04:50,474 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 192 flow. Second operand 3 states and 130 transitions. [2024-10-31 22:04:50,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 73 transitions, 276 flow [2024-10-31 22:04:50,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 254 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 22:04:50,477 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 174 flow [2024-10-31 22:04:50,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-10-31 22:04:50,478 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-31 22:04:50,478 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 174 flow [2024-10-31 22:04:50,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:04:50,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:50,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:50,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 22:04:50,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:04:50,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2000107466, now seen corresponding path program 1 times [2024-10-31 22:04:50,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:50,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994948125] [2024-10-31 22:04:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:50,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994948125] [2024-10-31 22:04:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994948125] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:50,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299632681] [2024-10-31 22:04:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:50,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:50,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:50,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:50,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:04:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:50,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:04:50,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:50,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:50,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299632681] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:50,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:50,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-31 22:04:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967547336] [2024-10-31 22:04:50,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:50,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:04:50,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:04:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:04:50,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:04:50,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 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 22:04:50,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:50,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:04:50,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:52,829 INFO L124 PetriNetUnfolderBase]: 11409/19195 cut-off events. [2024-10-31 22:04:52,829 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-10-31 22:04:52,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35417 conditions, 19195 events. 11409/19195 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146625 event pairs, 10250 based on Foata normal form. 2/17888 useless extension candidates. Maximal degree in co-relation 35381. Up to 15801 conditions per place. [2024-10-31 22:04:52,967 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-10-31 22:04:52,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 283 flow [2024-10-31 22:04:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:04:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:04:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-10-31 22:04:52,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-10-31 22:04:52,971 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 174 flow. Second operand 7 states and 252 transitions. [2024-10-31 22:04:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 283 flow [2024-10-31 22:04:52,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:52,975 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 200 flow [2024-10-31 22:04:52,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-10-31 22:04:52,976 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2024-10-31 22:04:52,976 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 200 flow [2024-10-31 22:04:52,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 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 22:04:52,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:52,977 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:53,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-31 22:04:53,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:53,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:04:53,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash -132993098, now seen corresponding path program 2 times [2024-10-31 22:04:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:53,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451775764] [2024-10-31 22:04:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:53,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:04:53,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451775764] [2024-10-31 22:04:53,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451775764] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:53,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:53,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:53,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302330219] [2024-10-31 22:04:53,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:53,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:53,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:53,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:53,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:53,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:04:53,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:53,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:53,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:04:53,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:55,244 INFO L124 PetriNetUnfolderBase]: 12446/20635 cut-off events. [2024-10-31 22:04:55,244 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-10-31 22:04:55,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38336 conditions, 20635 events. 12446/20635 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 158626 event pairs, 1538 based on Foata normal form. 399/20377 useless extension candidates. Maximal degree in co-relation 38295. Up to 14759 conditions per place. [2024-10-31 22:04:55,372 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 72 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-10-31 22:04:55,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 408 flow [2024-10-31 22:04:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-10-31 22:04:55,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2024-10-31 22:04:55,374 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 200 flow. Second operand 3 states and 157 transitions. [2024-10-31 22:04:55,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 408 flow [2024-10-31 22:04:55,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:55,380 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 198 flow [2024-10-31 22:04:55,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-10-31 22:04:55,382 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-10-31 22:04:55,382 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 198 flow [2024-10-31 22:04:55,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:55,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:55,382 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:55,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-31 22:04:55,383 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:04:55,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash 172181730, now seen corresponding path program 1 times [2024-10-31 22:04:55,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:55,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725719799] [2024-10-31 22:04:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:04:55,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:55,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725719799] [2024-10-31 22:04:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725719799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:55,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:55,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:55,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964233016] [2024-10-31 22:04:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:55,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:55,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:04:55,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:04:55,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:55,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:55,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:04:55,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:57,582 INFO L124 PetriNetUnfolderBase]: 11409/19199 cut-off events. [2024-10-31 22:04:57,582 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2024-10-31 22:04:57,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36225 conditions, 19199 events. 11409/19199 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 148235 event pairs, 1538 based on Foata normal form. 399/18956 useless extension candidates. Maximal degree in co-relation 36185. Up to 13323 conditions per place. [2024-10-31 22:04:57,708 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 71 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-10-31 22:04:57,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 404 flow [2024-10-31 22:04:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:04:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-31 22:04:57,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-10-31 22:04:57,710 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 198 flow. Second operand 3 states and 156 transitions. [2024-10-31 22:04:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 404 flow [2024-10-31 22:04:57,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:57,714 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 196 flow [2024-10-31 22:04:57,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-10-31 22:04:57,715 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-10-31 22:04:57,715 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 196 flow [2024-10-31 22:04:57,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:57,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:57,716 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:57,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-31 22:04:57,716 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:04:57,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2081627036, now seen corresponding path program 1 times [2024-10-31 22:04:57,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:57,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831267315] [2024-10-31 22:04:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:57,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:57,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831267315] [2024-10-31 22:04:57,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831267315] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:57,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633511404] [2024-10-31 22:04:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:57,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:57,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:57,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:57,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:04:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:57,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:04:57,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:57,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:04:58,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633511404] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:58,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:58,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-31 22:04:58,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631205322] [2024-10-31 22:04:58,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:58,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:04:58,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:04:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:04:58,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:04:58,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 196 flow. Second operand has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 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 22:04:58,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:58,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:04:58,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:00,488 INFO L124 PetriNetUnfolderBase]: 11409/19208 cut-off events. [2024-10-31 22:05:00,489 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-10-31 22:05:00,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36252 conditions, 19208 events. 11409/19208 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 146578 event pairs, 10250 based on Foata normal form. 3/17902 useless extension candidates. Maximal degree in co-relation 36185. Up to 15801 conditions per place. [2024-10-31 22:05:00,632 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 40 selfloop transitions, 13 changer transitions 0/80 dead transitions. [2024-10-31 22:05:00,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 80 transitions, 338 flow [2024-10-31 22:05:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:05:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:05:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 433 transitions. [2024-10-31 22:05:00,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4325674325674326 [2024-10-31 22:05:00,635 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 196 flow. Second operand 13 states and 433 transitions. [2024-10-31 22:05:00,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 80 transitions, 338 flow [2024-10-31 22:05:00,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 80 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:00,640 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 269 flow [2024-10-31 22:05:00,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=269, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-10-31 22:05:00,641 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-10-31 22:05:00,641 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 269 flow [2024-10-31 22:05:00,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 30.466666666666665) internal successors, (457), 15 states have internal predecessors, (457), 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 22:05:00,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:00,642 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:00,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:00,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97eeafc3-2dc7-4a0e-b8b9-b36e6afd5f52/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-31 22:05:00,843 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-10-31 22:05:00,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash -468022576, now seen corresponding path program 2 times [2024-10-31 22:05:00,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:00,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669734025] [2024-10-31 22:05:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:00,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-31 22:05:01,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669734025] [2024-10-31 22:05:01,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669734025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:01,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:01,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195109094] [2024-10-31 22:05:01,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:01,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:01,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:01,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-10-31 22:05:01,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 22:05:01,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:01,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-10-31 22:05:01,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand