./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya --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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:28:28,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:28:29,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:28:29,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:28:29,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:28:29,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:28:29,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:28:29,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:28:29,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:28:29,066 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:28:29,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:28:29,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:28:29,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:28:29,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:28:29,069 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:28:29,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:28:29,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:28:29,071 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:28:29,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:28:29,071 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:28:29,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:28:29,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:28:29,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:28:29,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:28:29,075 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:28:29,075 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:28:29,075 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:28:29,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:28:29,076 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:28:29,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:28:29,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:28:29,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:28:29,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:28:29,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:28:29,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:28:29,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:28:29,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:28:29,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:28:29,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:28:29,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:28:29,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:28:29,082 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:28:29,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:28:29,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:28:29,082 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_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2023-11-29 06:28:29,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:28:29,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:28:29,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:28:29,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:28:29,335 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:28:29,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/stack_longer-2.i [2023-11-29 06:28:32,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:28:32,353 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:28:32,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/sv-benchmarks/c/pthread/stack_longer-2.i [2023-11-29 06:28:32,388 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/data/39616df55/e1a76ba607964a07b84575a142fc56de/FLAG308006966 [2023-11-29 06:28:32,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/data/39616df55/e1a76ba607964a07b84575a142fc56de [2023-11-29 06:28:32,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:28:32,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:28:32,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:28:32,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:28:32,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:28:32,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:32,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55646df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32, skipping insertion in model container [2023-11-29 06:28:32,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:32,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:28:32,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:28:32,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:28:32,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:28:32,965 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:28:32,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32 WrapperNode [2023-11-29 06:28:32,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:28:32,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:28:32,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:28:32,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:28:32,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:32,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,024 INFO L138 Inliner]: procedures = 278, calls = 41, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 168 [2023-11-29 06:28:33,024 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:28:33,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:28:33,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:28:33,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:28:33,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,059 INFO L175 MemorySlicer]: Split 14 memory accesses to 5 slices as follows [2, 5, 2, 2, 3]. 36 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 4 writes are split as follows [0, 0, 1, 1, 2]. [2023-11-29 06:28:33,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:28:33,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:28:33,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:28:33,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:28:33,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (1/1) ... [2023-11-29 06:28:33,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:28:33,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:33,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:28:33,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:28:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 06:28:33,152 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 06:28:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 06:28:33,153 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 06:28:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:28:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:28:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 06:28:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:28:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:28:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:28:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:28:33,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 06:28:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:28:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:28:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:28:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:28:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 06:28:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 06:28:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:28:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:28:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:28:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:28:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:28:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:28:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:28:33,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:28:33,160 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:28:33,338 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:28:33,340 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:28:33,570 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:28:33,758 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:28:33,759 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:28:33,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:28:33 BoogieIcfgContainer [2023-11-29 06:28:33,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:28:33,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:28:33,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:28:33,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:28:33,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:28:32" (1/3) ... [2023-11-29 06:28:33,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25989dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:28:33, skipping insertion in model container [2023-11-29 06:28:33,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:32" (2/3) ... [2023-11-29 06:28:33,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25989dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:28:33, skipping insertion in model container [2023-11-29 06:28:33,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:28:33" (3/3) ... [2023-11-29 06:28:33,768 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-11-29 06:28:33,777 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:28:33,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:28:33,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 06:28:33,788 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:28:33,841 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 06:28:33,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 49 transitions, 112 flow [2023-11-29 06:28:33,906 INFO L124 PetriNetUnfolderBase]: 5/47 cut-off events. [2023-11-29 06:28:33,906 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 06:28:33,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 5/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-29 06:28:33,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 49 transitions, 112 flow [2023-11-29 06:28:33,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 45 transitions, 99 flow [2023-11-29 06:28:33,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:28:33,929 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d7b2442, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:28:33,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 06:28:33,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:28:33,938 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-29 06:28:33,938 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:28:33,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:33,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:33,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:33,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash -363768998, now seen corresponding path program 1 times [2023-11-29 06:28:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:33,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973440077] [2023-11-29 06:28:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:33,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:34,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:34,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973440077] [2023-11-29 06:28:34,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973440077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:34,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:34,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:28:34,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656261045] [2023-11-29 06:28:34,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:34,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:28:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:28:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:28:34,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:28:34,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2023-11-29 06:28:34,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:34,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:28:34,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:34,679 INFO L124 PetriNetUnfolderBase]: 750/1483 cut-off events. [2023-11-29 06:28:34,679 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-29 06:28:34,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 1483 events. 750/1483 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7891 event pairs, 234 based on Foata normal form. 41/1373 useless extension candidates. Maximal degree in co-relation 2569. Up to 713 conditions per place. [2023-11-29 06:28:34,695 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 60 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2023-11-29 06:28:34,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 306 flow [2023-11-29 06:28:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:28:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:28:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-29 06:28:34,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2023-11-29 06:28:34,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-29 06:28:34,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-29 06:28:34,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:34,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-29 06:28:34,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:34,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:34,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:34,718 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 99 flow. Second operand 4 states and 134 transitions. [2023-11-29 06:28:34,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 306 flow [2023-11-29 06:28:34,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 79 transitions, 297 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:28:34,726 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 130 flow [2023-11-29 06:28:34,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-11-29 06:28:34,732 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2023-11-29 06:28:34,732 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 130 flow [2023-11-29 06:28:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2023-11-29 06:28:34,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:34,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:34,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:28:34,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:34,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1255862108, now seen corresponding path program 1 times [2023-11-29 06:28:34,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:34,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171049622] [2023-11-29 06:28:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:34,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:34,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171049622] [2023-11-29 06:28:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171049622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:34,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:34,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:28:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319395305] [2023-11-29 06:28:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:34,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:28:34,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:28:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:28:34,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:28:34,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:34,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:34,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:28:34,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:35,218 INFO L124 PetriNetUnfolderBase]: 1218/2479 cut-off events. [2023-11-29 06:28:35,218 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2023-11-29 06:28:35,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 2479 events. 1218/2479 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14555 event pairs, 633 based on Foata normal form. 78/2389 useless extension candidates. Maximal degree in co-relation 4279. Up to 1345 conditions per place. [2023-11-29 06:28:35,235 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 74 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-29 06:28:35,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 411 flow [2023-11-29 06:28:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:28:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:28:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2023-11-29 06:28:35,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6887755102040817 [2023-11-29 06:28:35,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 135 transitions. [2023-11-29 06:28:35,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 135 transitions. [2023-11-29 06:28:35,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:35,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 135 transitions. [2023-11-29 06:28:35,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,241 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,241 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 130 flow. Second operand 4 states and 135 transitions. [2023-11-29 06:28:35,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 411 flow [2023-11-29 06:28:35,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 91 transitions, 411 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:28:35,246 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 154 flow [2023-11-29 06:28:35,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-11-29 06:28:35,246 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2023-11-29 06:28:35,247 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 154 flow [2023-11-29 06:28:35,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:35,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:35,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:28:35,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:35,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash 933507215, now seen corresponding path program 1 times [2023-11-29 06:28:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:35,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327913317] [2023-11-29 06:28:35,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:35,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:35,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327913317] [2023-11-29 06:28:35,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327913317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:35,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:35,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:28:35,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210391480] [2023-11-29 06:28:35,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:35,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:28:35,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:28:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:28:35,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:28:35,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:35,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:28:35,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:35,908 INFO L124 PetriNetUnfolderBase]: 1738/3382 cut-off events. [2023-11-29 06:28:35,908 INFO L125 PetriNetUnfolderBase]: For 1026/1068 co-relation queries the response was YES. [2023-11-29 06:28:35,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7505 conditions, 3382 events. 1738/3382 cut-off events. For 1026/1068 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21633 event pairs, 849 based on Foata normal form. 82/3336 useless extension candidates. Maximal degree in co-relation 5351. Up to 2002 conditions per place. [2023-11-29 06:28:35,938 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 73 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-11-29 06:28:35,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 443 flow [2023-11-29 06:28:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:28:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:28:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-29 06:28:35,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2023-11-29 06:28:35,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-29 06:28:35,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-29 06:28:35,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:35,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-29 06:28:35,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,943 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,943 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 154 flow. Second operand 4 states and 134 transitions. [2023-11-29 06:28:35,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 443 flow [2023-11-29 06:28:35,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:28:35,949 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 176 flow [2023-11-29 06:28:35,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-29 06:28:35,950 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2023-11-29 06:28:35,950 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 176 flow [2023-11-29 06:28:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:35,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:35,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:35,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:28:35,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:35,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:35,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1065117114, now seen corresponding path program 1 times [2023-11-29 06:28:35,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:35,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296967509] [2023-11-29 06:28:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:36,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:36,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296967509] [2023-11-29 06:28:36,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296967509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:36,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:36,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:28:36,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959894725] [2023-11-29 06:28:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:36,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:28:36,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:28:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:28:36,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 06:28:36,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:36,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:36,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 06:28:36,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:36,365 INFO L124 PetriNetUnfolderBase]: 929/2071 cut-off events. [2023-11-29 06:28:36,366 INFO L125 PetriNetUnfolderBase]: For 1002/1098 co-relation queries the response was YES. [2023-11-29 06:28:36,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4891 conditions, 2071 events. 929/2071 cut-off events. For 1002/1098 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 12551 event pairs, 299 based on Foata normal form. 76/2097 useless extension candidates. Maximal degree in co-relation 3837. Up to 974 conditions per place. [2023-11-29 06:28:36,385 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2023-11-29 06:28:36,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 342 flow [2023-11-29 06:28:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:28:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:28:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2023-11-29 06:28:36,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 06:28:36,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 98 transitions. [2023-11-29 06:28:36,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 98 transitions. [2023-11-29 06:28:36,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:36,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 98 transitions. [2023-11-29 06:28:36,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:36,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:36,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:36,389 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 176 flow. Second operand 3 states and 98 transitions. [2023-11-29 06:28:36,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 342 flow [2023-11-29 06:28:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 336 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 06:28:36,397 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 175 flow [2023-11-29 06:28:36,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-29 06:28:36,398 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-11-29 06:28:36,398 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 175 flow [2023-11-29 06:28:36,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:36,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:36,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:36,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:28:36,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:36,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash 28680515, now seen corresponding path program 1 times [2023-11-29 06:28:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:36,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930946944] [2023-11-29 06:28:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:36,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930946944] [2023-11-29 06:28:36,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930946944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655102636] [2023-11-29 06:28:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:36,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:36,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:36,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:28:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:36,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:28:36,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:36,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655102636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:36,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 06:28:36,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843909169] [2023-11-29 06:28:36,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:28:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:28:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:28:36,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:28:36,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:36,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:36,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:28:36,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:37,120 INFO L124 PetriNetUnfolderBase]: 957/2066 cut-off events. [2023-11-29 06:28:37,120 INFO L125 PetriNetUnfolderBase]: For 1045/1153 co-relation queries the response was YES. [2023-11-29 06:28:37,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 2066 events. 957/2066 cut-off events. For 1045/1153 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11876 event pairs, 195 based on Foata normal form. 74/2083 useless extension candidates. Maximal degree in co-relation 2769. Up to 762 conditions per place. [2023-11-29 06:28:37,133 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 89 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2023-11-29 06:28:37,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 595 flow [2023-11-29 06:28:37,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:28:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:28:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-29 06:28:37,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539358600583091 [2023-11-29 06:28:37,135 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-29 06:28:37,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-29 06:28:37,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:37,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-29 06:28:37,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,138 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,138 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 175 flow. Second operand 7 states and 190 transitions. [2023-11-29 06:28:37,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 595 flow [2023-11-29 06:28:37,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 111 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:28:37,142 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 231 flow [2023-11-29 06:28:37,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2023-11-29 06:28:37,143 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2023-11-29 06:28:37,144 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 231 flow [2023-11-29 06:28:37,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:37,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:37,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:28:37,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:37,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:37,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1316298551, now seen corresponding path program 1 times [2023-11-29 06:28:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:37,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857202450] [2023-11-29 06:28:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857202450] [2023-11-29 06:28:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857202450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:37,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:37,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:28:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486034480] [2023-11-29 06:28:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:28:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:28:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:28:37,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:28:37,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:37,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:28:37,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:37,755 INFO L124 PetriNetUnfolderBase]: 1211/2691 cut-off events. [2023-11-29 06:28:37,755 INFO L125 PetriNetUnfolderBase]: For 2148/2268 co-relation queries the response was YES. [2023-11-29 06:28:37,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6944 conditions, 2691 events. 1211/2691 cut-off events. For 2148/2268 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17244 event pairs, 667 based on Foata normal form. 28/2712 useless extension candidates. Maximal degree in co-relation 5411. Up to 1405 conditions per place. [2023-11-29 06:28:37,771 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 66 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2023-11-29 06:28:37,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 506 flow [2023-11-29 06:28:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:28:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:28:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-29 06:28:37,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2023-11-29 06:28:37,773 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-29 06:28:37,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-29 06:28:37,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:37,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-29 06:28:37,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,775 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,775 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 231 flow. Second operand 4 states and 118 transitions. [2023-11-29 06:28:37,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 506 flow [2023-11-29 06:28:37,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 498 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 06:28:37,780 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 273 flow [2023-11-29 06:28:37,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2023-11-29 06:28:37,782 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2023-11-29 06:28:37,782 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 273 flow [2023-11-29 06:28:37,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:37,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:37,782 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:37,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:28:37,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:37,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash 889096449, now seen corresponding path program 1 times [2023-11-29 06:28:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:37,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501442436] [2023-11-29 06:28:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:37,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501442436] [2023-11-29 06:28:37,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501442436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:37,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409883849] [2023-11-29 06:28:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:37,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:37,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:37,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:28:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:37,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:28:37,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:38,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:28:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409883849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:28:38,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:28:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 06:28:38,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009168] [2023-11-29 06:28:38,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:28:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:28:38,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:28:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:28:38,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:28:38,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 273 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:38,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:38,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:28:38,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:39,187 INFO L124 PetriNetUnfolderBase]: 2649/5694 cut-off events. [2023-11-29 06:28:39,187 INFO L125 PetriNetUnfolderBase]: For 7475/7907 co-relation queries the response was YES. [2023-11-29 06:28:39,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15442 conditions, 5694 events. 2649/5694 cut-off events. For 7475/7907 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 37375 event pairs, 437 based on Foata normal form. 152/5839 useless extension candidates. Maximal degree in co-relation 8271. Up to 1223 conditions per place. [2023-11-29 06:28:39,231 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 196 selfloop transitions, 33 changer transitions 0/241 dead transitions. [2023-11-29 06:28:39,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 241 transitions, 1538 flow [2023-11-29 06:28:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:28:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 06:28:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 431 transitions. [2023-11-29 06:28:39,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497448979591837 [2023-11-29 06:28:39,234 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 431 transitions. [2023-11-29 06:28:39,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 431 transitions. [2023-11-29 06:28:39,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:39,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 431 transitions. [2023-11-29 06:28:39,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 26.9375) internal successors, (431), 16 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:39,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:39,303 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:39,303 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 273 flow. Second operand 16 states and 431 transitions. [2023-11-29 06:28:39,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 241 transitions, 1538 flow [2023-11-29 06:28:39,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 241 transitions, 1526 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 06:28:39,318 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 600 flow [2023-11-29 06:28:39,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=600, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-11-29 06:28:39,319 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 41 predicate places. [2023-11-29 06:28:39,319 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 600 flow [2023-11-29 06:28:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:39,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:39,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:39,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:28:39,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:39,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:39,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1656537458, now seen corresponding path program 1 times [2023-11-29 06:28:39,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:39,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583286951] [2023-11-29 06:28:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:39,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:39,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:39,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583286951] [2023-11-29 06:28:39,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583286951] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:39,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111128381] [2023-11-29 06:28:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:39,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:39,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:39,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:39,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:28:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:39,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:28:39,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:39,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111128381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:39,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:39,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:28:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627233878] [2023-11-29 06:28:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:39,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:28:39,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:28:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:28:39,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:28:39,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 600 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:39,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:39,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:28:39,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:40,727 INFO L124 PetriNetUnfolderBase]: 2830/6202 cut-off events. [2023-11-29 06:28:40,727 INFO L125 PetriNetUnfolderBase]: For 9886/10114 co-relation queries the response was YES. [2023-11-29 06:28:40,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17008 conditions, 6202 events. 2830/6202 cut-off events. For 9886/10114 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 42355 event pairs, 307 based on Foata normal form. 214/6201 useless extension candidates. Maximal degree in co-relation 14403. Up to 2177 conditions per place. [2023-11-29 06:28:40,764 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 199 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2023-11-29 06:28:40,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 227 transitions, 2067 flow [2023-11-29 06:28:40,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:28:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:28:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2023-11-29 06:28:40,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2023-11-29 06:28:40,766 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2023-11-29 06:28:40,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2023-11-29 06:28:40,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:40,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2023-11-29 06:28:40,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:40,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:40,769 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:40,769 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 600 flow. Second operand 6 states and 190 transitions. [2023-11-29 06:28:40,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 227 transitions, 2067 flow [2023-11-29 06:28:40,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 227 transitions, 1975 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-29 06:28:40,793 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 566 flow [2023-11-29 06:28:40,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2023-11-29 06:28:40,794 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2023-11-29 06:28:40,795 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 566 flow [2023-11-29 06:28:40,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:40,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:40,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:40,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:28:40,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:40,996 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:40,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:40,997 INFO L85 PathProgramCache]: Analyzing trace with hash 255743668, now seen corresponding path program 1 times [2023-11-29 06:28:40,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:40,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936067920] [2023-11-29 06:28:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:40,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:41,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936067920] [2023-11-29 06:28:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936067920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:41,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:41,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:28:41,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184956470] [2023-11-29 06:28:41,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:41,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:28:41,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:41,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:28:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:28:41,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:28:41,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:41,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:41,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:28:41,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:41,945 INFO L124 PetriNetUnfolderBase]: 2921/6058 cut-off events. [2023-11-29 06:28:41,945 INFO L125 PetriNetUnfolderBase]: For 12148/12494 co-relation queries the response was YES. [2023-11-29 06:28:41,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18126 conditions, 6058 events. 2921/6058 cut-off events. For 12148/12494 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 39232 event pairs, 623 based on Foata normal form. 42/6095 useless extension candidates. Maximal degree in co-relation 15155. Up to 3577 conditions per place. [2023-11-29 06:28:41,974 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 122 selfloop transitions, 13 changer transitions 0/145 dead transitions. [2023-11-29 06:28:41,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 145 transitions, 1127 flow [2023-11-29 06:28:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:28:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:28:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2023-11-29 06:28:41,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2023-11-29 06:28:41,976 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 166 transitions. [2023-11-29 06:28:41,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 166 transitions. [2023-11-29 06:28:41,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:41,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 166 transitions. [2023-11-29 06:28:41,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:41,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:41,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:41,978 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 566 flow. Second operand 6 states and 166 transitions. [2023-11-29 06:28:41,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 145 transitions, 1127 flow [2023-11-29 06:28:42,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 145 transitions, 1107 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:28:42,005 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 660 flow [2023-11-29 06:28:42,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=660, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2023-11-29 06:28:42,006 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-11-29 06:28:42,006 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 660 flow [2023-11-29 06:28:42,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:42,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:42,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:42,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:28:42,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:42,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:42,008 INFO L85 PathProgramCache]: Analyzing trace with hash -186945845, now seen corresponding path program 1 times [2023-11-29 06:28:42,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:42,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360273526] [2023-11-29 06:28:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:42,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:28:42,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:42,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360273526] [2023-11-29 06:28:42,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360273526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:42,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:42,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:28:42,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8727186] [2023-11-29 06:28:42,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:42,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:28:42,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:42,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:28:42,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:28:42,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:28:42,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 660 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:42,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:42,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:28:42,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:42,912 INFO L124 PetriNetUnfolderBase]: 3195/6759 cut-off events. [2023-11-29 06:28:42,913 INFO L125 PetriNetUnfolderBase]: For 12884/13022 co-relation queries the response was YES. [2023-11-29 06:28:42,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19607 conditions, 6759 events. 3195/6759 cut-off events. For 12884/13022 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 45444 event pairs, 595 based on Foata normal form. 226/6984 useless extension candidates. Maximal degree in co-relation 16644. Up to 2854 conditions per place. [2023-11-29 06:28:42,949 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 146 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2023-11-29 06:28:42,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 175 transitions, 1632 flow [2023-11-29 06:28:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:28:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:28:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2023-11-29 06:28:42,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2023-11-29 06:28:42,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 119 transitions. [2023-11-29 06:28:42,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 119 transitions. [2023-11-29 06:28:42,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:42,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 119 transitions. [2023-11-29 06:28:42,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-29 06:28:42,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:42,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:42,953 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 660 flow. Second operand 4 states and 119 transitions. [2023-11-29 06:28:42,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 175 transitions, 1632 flow [2023-11-29 06:28:42,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 175 transitions, 1618 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 06:28:42,997 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 668 flow [2023-11-29 06:28:42,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=668, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2023-11-29 06:28:42,998 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-11-29 06:28:42,998 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 668 flow [2023-11-29 06:28:42,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:42,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:42,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:42,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:28:42,999 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:42,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash 293678150, now seen corresponding path program 1 times [2023-11-29 06:28:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:43,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241660161] [2023-11-29 06:28:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:43,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:43,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:43,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241660161] [2023-11-29 06:28:43,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241660161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:43,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461756296] [2023-11-29 06:28:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:43,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:43,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:43,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:28:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:43,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:28:43,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:43,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461756296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:43,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 06:28:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850706362] [2023-11-29 06:28:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:43,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:28:43,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:28:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:28:43,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-29 06:28:43,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 668 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:43,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:43,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-29 06:28:43,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:44,142 INFO L124 PetriNetUnfolderBase]: 2914/6010 cut-off events. [2023-11-29 06:28:44,142 INFO L125 PetriNetUnfolderBase]: For 14228/14248 co-relation queries the response was YES. [2023-11-29 06:28:44,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18868 conditions, 6010 events. 2914/6010 cut-off events. For 14228/14248 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 39114 event pairs, 237 based on Foata normal form. 178/6008 useless extension candidates. Maximal degree in co-relation 18047. Up to 3601 conditions per place. [2023-11-29 06:28:44,186 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 131 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2023-11-29 06:28:44,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 159 transitions, 1368 flow [2023-11-29 06:28:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:28:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:28:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-29 06:28:44,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2023-11-29 06:28:44,188 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-29 06:28:44,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-29 06:28:44,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:44,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-29 06:28:44,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:44,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:44,190 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:44,190 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 668 flow. Second operand 6 states and 182 transitions. [2023-11-29 06:28:44,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 159 transitions, 1368 flow [2023-11-29 06:28:44,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 1332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:28:44,211 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 666 flow [2023-11-29 06:28:44,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=666, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-11-29 06:28:44,212 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 49 predicate places. [2023-11-29 06:28:44,212 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 666 flow [2023-11-29 06:28:44,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:44,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:44,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 06:28:44,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:28:44,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 06:28:44,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:44,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:44,413 INFO L85 PathProgramCache]: Analyzing trace with hash 514088547, now seen corresponding path program 1 times [2023-11-29 06:28:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537868091] [2023-11-29 06:28:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:28:44,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537868091] [2023-11-29 06:28:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537868091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:44,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:28:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336262192] [2023-11-29 06:28:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:44,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:28:44,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:28:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:28:44,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:28:44,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 666 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:44,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:44,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:28:44,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:45,168 INFO L124 PetriNetUnfolderBase]: 3039/6077 cut-off events. [2023-11-29 06:28:45,168 INFO L125 PetriNetUnfolderBase]: For 13431/13461 co-relation queries the response was YES. [2023-11-29 06:28:45,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19128 conditions, 6077 events. 3039/6077 cut-off events. For 13431/13461 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 38640 event pairs, 665 based on Foata normal form. 178/6252 useless extension candidates. Maximal degree in co-relation 16307. Up to 2981 conditions per place. [2023-11-29 06:28:45,196 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 108 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2023-11-29 06:28:45,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 1222 flow [2023-11-29 06:28:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:28:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:28:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-29 06:28:45,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5969387755102041 [2023-11-29 06:28:45,198 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-29 06:28:45,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-29 06:28:45,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:45,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-29 06:28:45,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:45,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:45,200 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:45,200 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 666 flow. Second operand 4 states and 117 transitions. [2023-11-29 06:28:45,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 1222 flow [2023-11-29 06:28:45,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 1213 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 06:28:45,234 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 673 flow [2023-11-29 06:28:45,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-11-29 06:28:45,235 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2023-11-29 06:28:45,236 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 673 flow [2023-11-29 06:28:45,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:45,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:45,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:45,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:28:45,237 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:45,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1283490780, now seen corresponding path program 1 times [2023-11-29 06:28:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549154964] [2023-11-29 06:28:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:45,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:45,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549154964] [2023-11-29 06:28:45,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549154964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:45,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:45,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:28:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413172821] [2023-11-29 06:28:45,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:45,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:28:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:28:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:28:45,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:28:45,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 673 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:45,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:45,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:28:45,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:46,186 INFO L124 PetriNetUnfolderBase]: 2991/6041 cut-off events. [2023-11-29 06:28:46,187 INFO L125 PetriNetUnfolderBase]: For 15784/15784 co-relation queries the response was YES. [2023-11-29 06:28:46,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19685 conditions, 6041 events. 2991/6041 cut-off events. For 15784/15784 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 38617 event pairs, 479 based on Foata normal form. 108/6144 useless extension candidates. Maximal degree in co-relation 16556. Up to 3210 conditions per place. [2023-11-29 06:28:46,219 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 88 selfloop transitions, 35 changer transitions 0/132 dead transitions. [2023-11-29 06:28:46,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 1123 flow [2023-11-29 06:28:46,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:28:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:28:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2023-11-29 06:28:46,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48104956268221577 [2023-11-29 06:28:46,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 165 transitions. [2023-11-29 06:28:46,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 165 transitions. [2023-11-29 06:28:46,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:46,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 165 transitions. [2023-11-29 06:28:46,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:46,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:46,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:46,225 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 673 flow. Second operand 7 states and 165 transitions. [2023-11-29 06:28:46,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 1123 flow [2023-11-29 06:28:46,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 1099 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 06:28:46,252 INFO L231 Difference]: Finished difference. Result has 96 places, 86 transitions, 756 flow [2023-11-29 06:28:46,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=96, PETRI_TRANSITIONS=86} [2023-11-29 06:28:46,253 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 49 predicate places. [2023-11-29 06:28:46,253 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 86 transitions, 756 flow [2023-11-29 06:28:46,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:46,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:46,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:46,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:28:46,254 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:46,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -261064186, now seen corresponding path program 1 times [2023-11-29 06:28:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:46,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699942693] [2023-11-29 06:28:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:46,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699942693] [2023-11-29 06:28:46,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699942693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696317802] [2023-11-29 06:28:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:46,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:46,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:46,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:28:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:46,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:28:46,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:46,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696317802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-29 06:28:46,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977837647] [2023-11-29 06:28:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:46,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:28:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:46,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:28:46,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:28:46,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:28:46,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:46,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:46,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:28:46,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:47,556 INFO L124 PetriNetUnfolderBase]: 2947/6007 cut-off events. [2023-11-29 06:28:47,556 INFO L125 PetriNetUnfolderBase]: For 19163/19163 co-relation queries the response was YES. [2023-11-29 06:28:47,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20055 conditions, 6007 events. 2947/6007 cut-off events. For 19163/19163 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 38872 event pairs, 681 based on Foata normal form. 124/6126 useless extension candidates. Maximal degree in co-relation 17205. Up to 2982 conditions per place. [2023-11-29 06:28:47,578 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 87 selfloop transitions, 28 changer transitions 12/136 dead transitions. [2023-11-29 06:28:47,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1263 flow [2023-11-29 06:28:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:28:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:28:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2023-11-29 06:28:47,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839650145772595 [2023-11-29 06:28:47,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 166 transitions. [2023-11-29 06:28:47,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 166 transitions. [2023-11-29 06:28:47,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:47,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 166 transitions. [2023-11-29 06:28:47,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:47,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:47,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:47,582 INFO L175 Difference]: Start difference. First operand has 96 places, 86 transitions, 756 flow. Second operand 7 states and 166 transitions. [2023-11-29 06:28:47,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1263 flow [2023-11-29 06:28:47,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 136 transitions, 1244 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 06:28:47,605 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 876 flow [2023-11-29 06:28:47,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=876, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2023-11-29 06:28:47,605 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2023-11-29 06:28:47,605 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 876 flow [2023-11-29 06:28:47,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:47,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:47,606 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:47,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:28:47,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:28:47,806 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:47,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1185810915, now seen corresponding path program 2 times [2023-11-29 06:28:47,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:47,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141381378] [2023-11-29 06:28:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:47,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:28:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141381378] [2023-11-29 06:28:47,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141381378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448999609] [2023-11-29 06:28:47,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:28:47,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:47,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:47,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:47,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:28:48,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:28:48,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:28:48,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:28:48,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:48,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:28:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:48,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448999609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:28:48,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:28:48,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-11-29 06:28:48,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651861503] [2023-11-29 06:28:48,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:28:48,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:28:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:48,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:28:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:28:48,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:28:48,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 876 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:48,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:48,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:28:48,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:49,347 INFO L124 PetriNetUnfolderBase]: 3024/6198 cut-off events. [2023-11-29 06:28:49,348 INFO L125 PetriNetUnfolderBase]: For 25402/25402 co-relation queries the response was YES. [2023-11-29 06:28:49,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21456 conditions, 6198 events. 3024/6198 cut-off events. For 25402/25402 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39272 event pairs, 483 based on Foata normal form. 68/6261 useless extension candidates. Maximal degree in co-relation 18986. Up to 1421 conditions per place. [2023-11-29 06:28:49,381 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 185 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2023-11-29 06:28:49,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 246 transitions, 2291 flow [2023-11-29 06:28:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:28:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:28:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2023-11-29 06:28:49,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884353741496599 [2023-11-29 06:28:49,383 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 359 transitions. [2023-11-29 06:28:49,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 359 transitions. [2023-11-29 06:28:49,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:49,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 359 transitions. [2023-11-29 06:28:49,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 23.933333333333334) internal successors, (359), 15 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:49,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:49,387 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:49,387 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 876 flow. Second operand 15 states and 359 transitions. [2023-11-29 06:28:49,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 246 transitions, 2291 flow [2023-11-29 06:28:49,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 246 transitions, 2254 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-29 06:28:49,417 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1342 flow [2023-11-29 06:28:49,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1342, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2023-11-29 06:28:49,418 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2023-11-29 06:28:49,418 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1342 flow [2023-11-29 06:28:49,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:49,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:49,419 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2023-11-29 06:28:49,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 06:28:49,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:28:49,619 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:49,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:49,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1922043638, now seen corresponding path program 2 times [2023-11-29 06:28:49,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:49,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728736618] [2023-11-29 06:28:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:49,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:49,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728736618] [2023-11-29 06:28:49,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728736618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:49,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006806264] [2023-11-29 06:28:49,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:28:49,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:49,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:49,839 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:49,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:28:50,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:28:50,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:28:50,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:28:50,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:50,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:28:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:28:50,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006806264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:28:50,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:28:50,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-29 06:28:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104807900] [2023-11-29 06:28:50,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:28:50,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 06:28:50,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 06:28:50,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:28:50,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 06:28:50,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1342 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:50,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:50,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 06:28:50,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:52,226 INFO L124 PetriNetUnfolderBase]: 5288/10870 cut-off events. [2023-11-29 06:28:52,226 INFO L125 PetriNetUnfolderBase]: For 56351/56351 co-relation queries the response was YES. [2023-11-29 06:28:52,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38284 conditions, 10870 events. 5288/10870 cut-off events. For 56351/56351 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 67744 event pairs, 1005 based on Foata normal form. 234/11099 useless extension candidates. Maximal degree in co-relation 30700. Up to 2603 conditions per place. [2023-11-29 06:28:52,283 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 357 selfloop transitions, 76 changer transitions 0/442 dead transitions. [2023-11-29 06:28:52,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 442 transitions, 4309 flow [2023-11-29 06:28:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:28:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 06:28:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 673 transitions. [2023-11-29 06:28:52,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722789115646258 [2023-11-29 06:28:52,287 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 673 transitions. [2023-11-29 06:28:52,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 673 transitions. [2023-11-29 06:28:52,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:52,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 673 transitions. [2023-11-29 06:28:52,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 28.041666666666668) internal successors, (673), 24 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:52,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 49.0) internal successors, (1225), 25 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:52,292 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 49.0) internal successors, (1225), 25 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:52,292 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1342 flow. Second operand 24 states and 673 transitions. [2023-11-29 06:28:52,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 442 transitions, 4309 flow [2023-11-29 06:28:52,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 442 transitions, 4285 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-29 06:28:52,349 INFO L231 Difference]: Finished difference. Result has 143 places, 148 transitions, 2173 flow [2023-11-29 06:28:52,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2173, PETRI_PLACES=143, PETRI_TRANSITIONS=148} [2023-11-29 06:28:52,350 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 96 predicate places. [2023-11-29 06:28:52,350 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 148 transitions, 2173 flow [2023-11-29 06:28:52,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:52,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:52,351 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:52,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 06:28:52,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:28:52,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:52,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:52,552 INFO L85 PathProgramCache]: Analyzing trace with hash 676157993, now seen corresponding path program 3 times [2023-11-29 06:28:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:52,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643110013] [2023-11-29 06:28:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:52,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643110013] [2023-11-29 06:28:52,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643110013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:52,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680443106] [2023-11-29 06:28:52,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:28:52,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:52,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:52,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:52,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:28:53,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 06:28:53,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:28:53,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:28:53,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:53,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:28:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680443106] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:28:53,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:28:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-29 06:28:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52864346] [2023-11-29 06:28:53,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:28:53,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 06:28:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 06:28:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-29 06:28:53,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:28:53,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 148 transitions, 2173 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:53,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:53,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:28:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:28:56,265 INFO L124 PetriNetUnfolderBase]: 7243/14769 cut-off events. [2023-11-29 06:28:56,265 INFO L125 PetriNetUnfolderBase]: For 91527/91527 co-relation queries the response was YES. [2023-11-29 06:28:56,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53857 conditions, 14769 events. 7243/14769 cut-off events. For 91527/91527 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 98182 event pairs, 767 based on Foata normal form. 108/14872 useless extension candidates. Maximal degree in co-relation 50966. Up to 2506 conditions per place. [2023-11-29 06:28:56,383 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 307 selfloop transitions, 141 changer transitions 0/457 dead transitions. [2023-11-29 06:28:56,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 457 transitions, 5178 flow [2023-11-29 06:28:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 06:28:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 06:28:56,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 621 transitions. [2023-11-29 06:28:56,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48744113029827313 [2023-11-29 06:28:56,386 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 621 transitions. [2023-11-29 06:28:56,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 621 transitions. [2023-11-29 06:28:56,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:28:56,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 621 transitions. [2023-11-29 06:28:56,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 23.884615384615383) internal successors, (621), 26 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:56,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 49.0) internal successors, (1323), 27 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:56,391 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 49.0) internal successors, (1323), 27 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:56,391 INFO L175 Difference]: Start difference. First operand has 143 places, 148 transitions, 2173 flow. Second operand 26 states and 621 transitions. [2023-11-29 06:28:56,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 457 transitions, 5178 flow [2023-11-29 06:28:56,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 457 transitions, 5058 flow, removed 45 selfloop flow, removed 7 redundant places. [2023-11-29 06:28:56,591 INFO L231 Difference]: Finished difference. Result has 171 places, 204 transitions, 3435 flow [2023-11-29 06:28:56,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3435, PETRI_PLACES=171, PETRI_TRANSITIONS=204} [2023-11-29 06:28:56,592 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 124 predicate places. [2023-11-29 06:28:56,592 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 204 transitions, 3435 flow [2023-11-29 06:28:56,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:56,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:28:56,592 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:28:56,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:28:56,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 06:28:56,793 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:28:56,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2096798769, now seen corresponding path program 4 times [2023-11-29 06:28:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103925746] [2023-11-29 06:28:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103925746] [2023-11-29 06:28:57,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103925746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482008623] [2023-11-29 06:28:57,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:28:57,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:57,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:57,247 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:57,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:28:57,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:28:57,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:28:57,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:28:57,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:57,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:28:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:57,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482008623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:28:57,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:28:57,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2023-11-29 06:28:57,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177162330] [2023-11-29 06:28:57,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:28:57,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 06:28:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 06:28:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:28:57,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:28:57,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 204 transitions, 3435 flow. Second operand has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:28:57,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:28:57,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:28:57,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:29:02,225 INFO L124 PetriNetUnfolderBase]: 10036/20416 cut-off events. [2023-11-29 06:29:02,225 INFO L125 PetriNetUnfolderBase]: For 159033/159033 co-relation queries the response was YES. [2023-11-29 06:29:02,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77053 conditions, 20416 events. 10036/20416 cut-off events. For 159033/159033 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 141842 event pairs, 971 based on Foata normal form. 218/20629 useless extension candidates. Maximal degree in co-relation 75656. Up to 3481 conditions per place. [2023-11-29 06:29:02,562 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 420 selfloop transitions, 222 changer transitions 0/651 dead transitions. [2023-11-29 06:29:02,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 651 transitions, 7846 flow [2023-11-29 06:29:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 06:29:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 06:29:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 882 transitions. [2023-11-29 06:29:02,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-11-29 06:29:02,564 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 882 transitions. [2023-11-29 06:29:02,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 882 transitions. [2023-11-29 06:29:02,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:29:02,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 882 transitions. [2023-11-29 06:29:02,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 23.83783783783784) internal successors, (882), 37 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:02,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 49.0) internal successors, (1862), 38 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:02,569 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 49.0) internal successors, (1862), 38 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:02,569 INFO L175 Difference]: Start difference. First operand has 171 places, 204 transitions, 3435 flow. Second operand 37 states and 882 transitions. [2023-11-29 06:29:02,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 651 transitions, 7846 flow [2023-11-29 06:29:02,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 651 transitions, 7536 flow, removed 84 selfloop flow, removed 7 redundant places. [2023-11-29 06:29:02,841 INFO L231 Difference]: Finished difference. Result has 209 places, 279 transitions, 5130 flow [2023-11-29 06:29:02,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5130, PETRI_PLACES=209, PETRI_TRANSITIONS=279} [2023-11-29 06:29:02,841 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 162 predicate places. [2023-11-29 06:29:02,841 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 279 transitions, 5130 flow [2023-11-29 06:29:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:02,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:29:02,842 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:29:02,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:29:03,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:29:03,043 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:29:03,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:03,043 INFO L85 PathProgramCache]: Analyzing trace with hash -202893923, now seen corresponding path program 5 times [2023-11-29 06:29:03,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:03,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262347160] [2023-11-29 06:29:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:29:03,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:03,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262347160] [2023-11-29 06:29:03,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262347160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:29:03,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377872363] [2023-11-29 06:29:03,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:29:03,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:29:03,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:29:03,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:29:03,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:29:03,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-29 06:29:03,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:29:03,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:29:03,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:29:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:29:04,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:29:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:29:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377872363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:29:04,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:29:04,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2023-11-29 06:29:04,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048783775] [2023-11-29 06:29:04,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:29:04,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 06:29:04,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:04,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 06:29:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 06:29:04,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:29:04,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 279 transitions, 5130 flow. Second operand has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:04,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:29:04,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:29:04,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:29:12,047 INFO L124 PetriNetUnfolderBase]: 14157/28765 cut-off events. [2023-11-29 06:29:12,047 INFO L125 PetriNetUnfolderBase]: For 260447/260447 co-relation queries the response was YES. [2023-11-29 06:29:12,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111326 conditions, 28765 events. 14157/28765 cut-off events. For 260447/260447 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 205141 event pairs, 1285 based on Foata normal form. 316/29076 useless extension candidates. Maximal degree in co-relation 109546. Up to 4918 conditions per place. [2023-11-29 06:29:12,291 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 542 selfloop transitions, 323 changer transitions 0/874 dead transitions. [2023-11-29 06:29:12,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 874 transitions, 11296 flow [2023-11-29 06:29:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 06:29:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-29 06:29:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1143 transitions. [2023-11-29 06:29:12,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48596938775510207 [2023-11-29 06:29:12,295 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 1143 transitions. [2023-11-29 06:29:12,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 1143 transitions. [2023-11-29 06:29:12,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:29:12,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 1143 transitions. [2023-11-29 06:29:12,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 23.8125) internal successors, (1143), 48 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:12,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 49.0) internal successors, (2401), 49 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:12,302 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 49.0) internal successors, (2401), 49 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:12,302 INFO L175 Difference]: Start difference. First operand has 209 places, 279 transitions, 5130 flow. Second operand 48 states and 1143 transitions. [2023-11-29 06:29:12,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 874 transitions, 11296 flow [2023-11-29 06:29:12,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 874 transitions, 10739 flow, removed 265 selfloop flow, removed 6 redundant places. [2023-11-29 06:29:12,842 INFO L231 Difference]: Finished difference. Result has 262 places, 385 transitions, 7618 flow [2023-11-29 06:29:12,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4748, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7618, PETRI_PLACES=262, PETRI_TRANSITIONS=385} [2023-11-29 06:29:12,843 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 215 predicate places. [2023-11-29 06:29:12,843 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 385 transitions, 7618 flow [2023-11-29 06:29:12,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:12,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:29:12,843 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:29:12,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 06:29:13,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:29:13,044 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:29:13,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 238012475, now seen corresponding path program 1 times [2023-11-29 06:29:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968552554] [2023-11-29 06:29:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:13,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 06:29:13,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968552554] [2023-11-29 06:29:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968552554] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:29:13,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140200369] [2023-11-29 06:29:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:13,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:29:13,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:29:13,721 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:29:13,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:29:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:13,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:29:13,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:29:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 06:29:14,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:29:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 06:29:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140200369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:29:14,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:29:14,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2023-11-29 06:29:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363014477] [2023-11-29 06:29:14,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:29:14,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:29:14,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:29:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:29:14,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:29:14,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 385 transitions, 7618 flow. Second operand has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:14,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:29:14,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:29:14,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:29:27,419 INFO L124 PetriNetUnfolderBase]: 24095/49397 cut-off events. [2023-11-29 06:29:27,420 INFO L125 PetriNetUnfolderBase]: For 464451/464451 co-relation queries the response was YES. [2023-11-29 06:29:27,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195251 conditions, 49397 events. 24095/49397 cut-off events. For 464451/464451 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 409394 event pairs, 3127 based on Foata normal form. 324/49716 useless extension candidates. Maximal degree in co-relation 187908. Up to 10645 conditions per place. [2023-11-29 06:29:27,932 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 441 selfloop transitions, 604 changer transitions 0/1054 dead transitions. [2023-11-29 06:29:27,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1054 transitions, 19447 flow [2023-11-29 06:29:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 06:29:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 06:29:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 651 transitions. [2023-11-29 06:29:27,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-11-29 06:29:27,935 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 651 transitions. [2023-11-29 06:29:27,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 651 transitions. [2023-11-29 06:29:27,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:29:27,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 651 transitions. [2023-11-29 06:29:27,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 24.11111111111111) internal successors, (651), 27 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:27,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 49.0) internal successors, (1372), 28 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:27,938 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 49.0) internal successors, (1372), 28 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:27,938 INFO L175 Difference]: Start difference. First operand has 262 places, 385 transitions, 7618 flow. Second operand 27 states and 651 transitions. [2023-11-29 06:29:27,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1054 transitions, 19447 flow [2023-11-29 06:29:29,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1054 transitions, 18685 flow, removed 323 selfloop flow, removed 10 redundant places. [2023-11-29 06:29:29,825 INFO L231 Difference]: Finished difference. Result has 291 places, 784 transitions, 17286 flow [2023-11-29 06:29:29,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7290, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17286, PETRI_PLACES=291, PETRI_TRANSITIONS=784} [2023-11-29 06:29:29,826 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 244 predicate places. [2023-11-29 06:29:29,826 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 784 transitions, 17286 flow [2023-11-29 06:29:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:29,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:29:29,826 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:29:29,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:29:30,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:29:30,027 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:29:30,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash -451486999, now seen corresponding path program 6 times [2023-11-29 06:29:30,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:30,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384182094] [2023-11-29 06:29:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:30,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:29:30,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:30,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384182094] [2023-11-29 06:29:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384182094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:29:30,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117156303] [2023-11-29 06:29:30,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:29:30,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:29:30,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:29:30,947 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:29:30,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:29:31,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 06:29:31,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:29:31,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 06:29:31,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:29:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:29:31,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:29:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:29:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117156303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:29:32,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:29:32,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2023-11-29 06:29:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723700019] [2023-11-29 06:29:32,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:29:32,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 06:29:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 06:29:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 06:29:32,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:29:32,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 784 transitions, 17286 flow. Second operand has 46 states, 46 states have (on average 17.043478260869566) internal successors, (784), 46 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:32,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:29:32,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:29:32,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:29:55,481 INFO L124 PetriNetUnfolderBase]: 30584/62244 cut-off events. [2023-11-29 06:29:55,481 INFO L125 PetriNetUnfolderBase]: For 712377/712377 co-relation queries the response was YES. [2023-11-29 06:29:56,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251256 conditions, 62244 events. 30584/62244 cut-off events. For 712377/712377 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 512102 event pairs, 3379 based on Foata normal form. 392/62631 useless extension candidates. Maximal degree in co-relation 236286. Up to 10803 conditions per place. [2023-11-29 06:29:56,216 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 744 selfloop transitions, 833 changer transitions 0/1586 dead transitions. [2023-11-29 06:29:56,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1586 transitions, 27280 flow [2023-11-29 06:29:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 06:29:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-29 06:29:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1404 transitions. [2023-11-29 06:29:56,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564510549982703 [2023-11-29 06:29:56,220 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 1404 transitions. [2023-11-29 06:29:56,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 1404 transitions. [2023-11-29 06:29:56,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:29:56,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 1404 transitions. [2023-11-29 06:29:56,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 23.796610169491526) internal successors, (1404), 59 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:56,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 49.0) internal successors, (2940), 60 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:56,227 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 49.0) internal successors, (2940), 60 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:56,227 INFO L175 Difference]: Start difference. First operand has 291 places, 784 transitions, 17286 flow. Second operand 59 states and 1404 transitions. [2023-11-29 06:29:56,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1586 transitions, 27280 flow [2023-11-29 06:29:59,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1586 transitions, 26676 flow, removed 297 selfloop flow, removed 3 redundant places. [2023-11-29 06:29:59,861 INFO L231 Difference]: Finished difference. Result has 363 places, 971 transitions, 23061 flow [2023-11-29 06:29:59,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=16659, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=23061, PETRI_PLACES=363, PETRI_TRANSITIONS=971} [2023-11-29 06:29:59,862 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 316 predicate places. [2023-11-29 06:29:59,862 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 971 transitions, 23061 flow [2023-11-29 06:29:59,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 17.043478260869566) internal successors, (784), 46 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:29:59,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:29:59,862 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:29:59,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 06:30:00,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:30:00,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:30:00,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:00,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1887063738, now seen corresponding path program 2 times [2023-11-29 06:30:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569542503] [2023-11-29 06:30:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:00,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 06:30:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:00,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569542503] [2023-11-29 06:30:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569542503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:30:00,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541024787] [2023-11-29 06:30:00,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:30:00,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:30:00,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:30:00,732 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:30:00,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:30:00,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:30:00,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:30:00,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:30:00,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:30:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:30:01,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:30:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:30:01,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541024787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:30:01,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:30:01,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 42 [2023-11-29 06:30:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145333778] [2023-11-29 06:30:01,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:30:01,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 06:30:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:01,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 06:30:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 06:30:01,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:30:01,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 971 transitions, 23061 flow. Second operand has 44 states, 44 states have (on average 17.227272727272727) internal successors, (758), 44 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:01,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:30:01,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:30:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:30:48,193 INFO L124 PetriNetUnfolderBase]: 52556/107150 cut-off events. [2023-11-29 06:30:48,193 INFO L125 PetriNetUnfolderBase]: For 1257445/1257445 co-relation queries the response was YES. [2023-11-29 06:30:49,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447153 conditions, 107150 events. 52556/107150 cut-off events. For 1257445/1257445 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 976546 event pairs, 8793 based on Foata normal form. 232/107377 useless extension candidates. Maximal degree in co-relation 427748. Up to 19173 conditions per place. [2023-11-29 06:30:49,930 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 1021 selfloop transitions, 1336 changer transitions 0/2366 dead transitions. [2023-11-29 06:30:49,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 2366 transitions, 49735 flow [2023-11-29 06:30:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 06:30:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-29 06:30:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 1237 transitions. [2023-11-29 06:30:49,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49499799919967985 [2023-11-29 06:30:49,934 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 1237 transitions. [2023-11-29 06:30:49,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 1237 transitions. [2023-11-29 06:30:49,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:30:49,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 1237 transitions. [2023-11-29 06:30:49,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 24.254901960784313) internal successors, (1237), 51 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:49,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 49.0) internal successors, (2548), 52 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:49,940 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 49.0) internal successors, (2548), 52 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:49,940 INFO L175 Difference]: Start difference. First operand has 363 places, 971 transitions, 23061 flow. Second operand 51 states and 1237 transitions. [2023-11-29 06:30:49,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 2366 transitions, 49735 flow [2023-11-29 06:31:00,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 2366 transitions, 48857 flow, removed 340 selfloop flow, removed 13 redundant places. [2023-11-29 06:31:00,896 INFO L231 Difference]: Finished difference. Result has 425 places, 1759 transitions, 45945 flow [2023-11-29 06:31:00,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=22516, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=717, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=45945, PETRI_PLACES=425, PETRI_TRANSITIONS=1759} [2023-11-29 06:31:00,898 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 378 predicate places. [2023-11-29 06:31:00,898 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 1759 transitions, 45945 flow [2023-11-29 06:31:00,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 17.227272727272727) internal successors, (758), 44 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:00,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:00,898 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:00,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:31:01,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:01,099 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:31:01,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2020619662, now seen corresponding path program 3 times [2023-11-29 06:31:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530828099] [2023-11-29 06:31:01,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:01,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:31:01,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:01,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530828099] [2023-11-29 06:31:01,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530828099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:01,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340972965] [2023-11-29 06:31:01,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:31:01,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:01,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:01,639 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:01,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:31:02,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 06:31:02,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:31:02,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:31:02,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:31:02,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:31:03,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340972965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:03,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:03,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2023-11-29 06:31:03,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403252981] [2023-11-29 06:31:03,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:03,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 06:31:03,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:03,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 06:31:03,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 06:31:03,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:31:03,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1759 transitions, 45945 flow. Second operand has 44 states, 44 states have (on average 17.227272727272727) internal successors, (758), 44 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:03,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:31:03,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:32:47,308 INFO L124 PetriNetUnfolderBase]: 79779/162467 cut-off events. [2023-11-29 06:32:47,308 INFO L125 PetriNetUnfolderBase]: For 2251791/2251791 co-relation queries the response was YES. [2023-11-29 06:32:49,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703022 conditions, 162467 events. 79779/162467 cut-off events. For 2251791/2251791 co-relation queries the response was YES. Maximal size of possible extension queue 1395. Compared 1576825 event pairs, 10597 based on Foata normal form. 592/163054 useless extension candidates. Maximal degree in co-relation 675747. Up to 28494 conditions per place. [2023-11-29 06:32:50,382 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 958 selfloop transitions, 2432 changer transitions 0/3399 dead transitions. [2023-11-29 06:32:50,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 3399 transitions, 81869 flow [2023-11-29 06:32:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 06:32:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-29 06:32:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1334 transitions. [2023-11-29 06:32:50,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47762262799856786 [2023-11-29 06:32:50,384 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1334 transitions. [2023-11-29 06:32:50,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1334 transitions. [2023-11-29 06:32:50,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:32:50,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1334 transitions. [2023-11-29 06:32:50,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 23.403508771929825) internal successors, (1334), 57 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:50,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 49.0) internal successors, (2842), 58 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:50,392 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 49.0) internal successors, (2842), 58 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:50,392 INFO L175 Difference]: Start difference. First operand has 425 places, 1759 transitions, 45945 flow. Second operand 57 states and 1334 transitions. [2023-11-29 06:32:50,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 3399 transitions, 81869 flow [2023-11-29 06:33:20,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 3399 transitions, 80857 flow, removed 504 selfloop flow, removed 2 redundant places. [2023-11-29 06:33:20,742 INFO L231 Difference]: Finished difference. Result has 504 places, 2835 transitions, 80074 flow [2023-11-29 06:33:20,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=44585, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=80074, PETRI_PLACES=504, PETRI_TRANSITIONS=2835} [2023-11-29 06:33:20,744 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 457 predicate places. [2023-11-29 06:33:20,744 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 2835 transitions, 80074 flow [2023-11-29 06:33:20,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 17.227272727272727) internal successors, (758), 44 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:20,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:20,745 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:20,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:33:20,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:20,945 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:33:20,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash -982999079, now seen corresponding path program 4 times [2023-11-29 06:33:20,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:20,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166500858] [2023-11-29 06:33:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 558 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 06:33:21,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:21,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166500858] [2023-11-29 06:33:21,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166500858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:33:21,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918271297] [2023-11-29 06:33:21,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:33:21,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:21,636 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:21,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:33:21,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:33:21,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:21,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:33:21,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 06:33:22,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 06:33:22,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918271297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:22,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:33:22,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 40 [2023-11-29 06:33:22,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000705174] [2023-11-29 06:33:22,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:22,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 06:33:22,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:22,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 06:33:22,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1354, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 06:33:22,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2023-11-29 06:33:22,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 2835 transitions, 80074 flow. Second operand has 42 states, 42 states have (on average 17.428571428571427) internal successors, (732), 42 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:22,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:22,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2023-11-29 06:33:22,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:38:19,819 INFO L124 PetriNetUnfolderBase]: 147523/300299 cut-off events. [2023-11-29 06:38:19,819 INFO L125 PetriNetUnfolderBase]: For 4522847/4522847 co-relation queries the response was YES. [2023-11-29 06:38:25,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356544 conditions, 300299 events. 147523/300299 cut-off events. For 4522847/4522847 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 3128341 event pairs, 17971 based on Foata normal form. 544/300838 useless extension candidates. Maximal degree in co-relation 1325811. Up to 53000 conditions per place. [2023-11-29 06:38:26,694 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 1062 selfloop transitions, 5057 changer transitions 0/6128 dead transitions. [2023-11-29 06:38:26,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 6128 transitions, 170221 flow [2023-11-29 06:38:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 06:38:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-29 06:38:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1185 transitions. [2023-11-29 06:38:26,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48367346938775513 [2023-11-29 06:38:26,697 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 1185 transitions. [2023-11-29 06:38:26,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 1185 transitions. [2023-11-29 06:38:26,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:38:26,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 1185 transitions. [2023-11-29 06:38:26,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 23.7) internal successors, (1185), 50 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:26,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 49.0) internal successors, (2499), 51 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:26,703 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 49.0) internal successors, (2499), 51 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:26,703 INFO L175 Difference]: Start difference. First operand has 504 places, 2835 transitions, 80074 flow. Second operand 50 states and 1185 transitions. [2023-11-29 06:38:26,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 6128 transitions, 170221 flow [2023-11-29 06:40:56,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 6128 transitions, 165250 flow, removed 2196 selfloop flow, removed 15 redundant places. [2023-11-29 06:40:56,166 INFO L231 Difference]: Finished difference. Result has 558 places, 5614 transitions, 167347 flow [2023-11-29 06:40:56,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=77439, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2652, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=167347, PETRI_PLACES=558, PETRI_TRANSITIONS=5614} [2023-11-29 06:40:56,169 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 511 predicate places. [2023-11-29 06:40:56,170 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 5614 transitions, 167347 flow [2023-11-29 06:40:56,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 17.428571428571427) internal successors, (732), 42 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:56,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:56,170 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:56,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:40:56,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7923e7-00ad-4f71-9646-aa1a43693711/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:56,371 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 06:40:56,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1356739987, now seen corresponding path program 5 times [2023-11-29 06:40:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:56,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110858784] [2023-11-29 06:40:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:56,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat