./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu --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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:42,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:42,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:03:42,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:42,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:43,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:43,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:43,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:43,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:43,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:43,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:43,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:43,034 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:43,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:43,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:43,037 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:43,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:43,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:43,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:43,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:43,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:43,039 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:43,040 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:03:43,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:43,042 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:43,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:43,043 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:43,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:43,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:43,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:43,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:43,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:43,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:43,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:43,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:43,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:43,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:43,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:43,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:43,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:43,048 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:43,049 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_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2023-11-19 08:03:43,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:43,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:43,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:43,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:43,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:43,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2023-11-19 08:03:46,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:46,693 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:46,694 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2023-11-19 08:03:46,704 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/data/fac18fc4d/24f4ecac1c244b8888669fb3e2e59bf8/FLAG3fa8b8d5f [2023-11-19 08:03:46,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/data/fac18fc4d/24f4ecac1c244b8888669fb3e2e59bf8 [2023-11-19 08:03:46,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:46,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:46,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:46,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:46,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:46,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:46" (1/1) ... [2023-11-19 08:03:46,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e374fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:46, skipping insertion in model container [2023-11-19 08:03:46,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:46" (1/1) ... [2023-11-19 08:03:46,768 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:46,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:46,996 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:47,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:47,064 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:47,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47 WrapperNode [2023-11-19 08:03:47,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:47,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:47,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:47,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:47,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,144 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 371 [2023-11-19 08:03:47,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:47,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:47,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:47,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:47,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,167 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:47,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:47,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:47,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:47,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (1/1) ... [2023-11-19 08:03:47,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:47,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:47,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:03:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:03:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:03:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:03:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:03:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:03:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:03:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:03:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:47,327 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:03:47,497 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:47,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:48,230 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:48,268 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:48,268 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:03:48,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:48 BoogieIcfgContainer [2023-11-19 08:03:48,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:48,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:48,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:48,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:48,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:46" (1/3) ... [2023-11-19 08:03:48,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9c55d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:48, skipping insertion in model container [2023-11-19 08:03:48,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:47" (2/3) ... [2023-11-19 08:03:48,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9c55d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:48, skipping insertion in model container [2023-11-19 08:03:48,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:48" (3/3) ... [2023-11-19 08:03:48,295 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-11-19 08:03:48,306 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:03:48,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:48,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-19 08:03:48,319 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:03:48,492 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:03:48,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 478 transitions, 977 flow [2023-11-19 08:03:48,833 INFO L124 PetriNetUnfolderBase]: 32/475 cut-off events. [2023-11-19 08:03:48,833 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:03:48,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 475 events. 32/475 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1360 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2023-11-19 08:03:48,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 478 transitions, 977 flow [2023-11-19 08:03:48,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 430 places, 451 transitions, 917 flow [2023-11-19 08:03:48,878 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:48,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 430 places, 451 transitions, 917 flow [2023-11-19 08:03:48,895 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 430 places, 451 transitions, 917 flow [2023-11-19 08:03:48,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 451 transitions, 917 flow [2023-11-19 08:03:49,034 INFO L124 PetriNetUnfolderBase]: 31/451 cut-off events. [2023-11-19 08:03:49,036 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:03:49,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 451 events. 31/451 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1352 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2023-11-19 08:03:49,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 64680 [2023-11-19 08:04:14,719 INFO L134 LiptonReduction]: Checked pairs total: 60988 [2023-11-19 08:04:14,719 INFO L136 LiptonReduction]: Total number of compositions: 590 [2023-11-19 08:04:14,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:14,743 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;@740e69c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:14,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-19 08:04:14,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:04:14,747 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:04:14,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:14,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:14,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:04:14,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:14,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash 64238, now seen corresponding path program 1 times [2023-11-19 08:04:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:14,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586050836] [2023-11-19 08:04:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:15,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586050836] [2023-11-19 08:04:15,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586050836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:15,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:15,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:04:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214379420] [2023-11-19 08:04:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:15,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:15,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:15,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:15,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1068 [2023-11-19 08:04:15,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 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) [2023-11-19 08:04:15,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:15,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1068 [2023-11-19 08:04:15,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:16,276 INFO L124 PetriNetUnfolderBase]: 3107/4424 cut-off events. [2023-11-19 08:04:16,277 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2023-11-19 08:04:16,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9071 conditions, 4424 events. 3107/4424 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 20996 event pairs, 2653 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 8144. Up to 4424 conditions per place. [2023-11-19 08:04:16,313 INFO L140 encePairwiseOnDemand]: 1054/1068 looper letters, 38 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-19 08:04:16,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 179 flow [2023-11-19 08:04:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1393 transitions. [2023-11-19 08:04:16,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434769038701623 [2023-11-19 08:04:16,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1393 transitions. [2023-11-19 08:04:16,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1393 transitions. [2023-11-19 08:04:16,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:16,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1393 transitions. [2023-11-19 08:04:16,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 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) [2023-11-19 08:04:16,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:16,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:16,370 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1393 transitions. [2023-11-19 08:04:16,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 179 flow [2023-11-19 08:04:16,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:04:16,383 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 105 flow [2023-11-19 08:04:16,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-19 08:04:16,389 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-19 08:04:16,389 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 105 flow [2023-11-19 08:04:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 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) [2023-11-19 08:04:16,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:16,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:04:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:04:16,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:16,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1993213, now seen corresponding path program 1 times [2023-11-19 08:04:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:16,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382761130] [2023-11-19 08:04:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:16,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:16,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:16,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382761130] [2023-11-19 08:04:16,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382761130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:16,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006945851] [2023-11-19 08:04:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:16,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:16,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:16,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:16,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:04:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:16,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:16,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:16,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006945851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:16,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:04:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 08:04:16,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969969075] [2023-11-19 08:04:16,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:16,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:04:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:04:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:04:16,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1068 [2023-11-19 08:04:16,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 448.14285714285717) internal successors, (3137), 7 states have internal predecessors, (3137), 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) [2023-11-19 08:04:16,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:16,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1068 [2023-11-19 08:04:16,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:17,905 INFO L124 PetriNetUnfolderBase]: 3113/4433 cut-off events. [2023-11-19 08:04:17,906 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 08:04:17,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 4433 events. 3113/4433 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 21026 event pairs, 2653 based on Foata normal form. 0/1711 useless extension candidates. Maximal degree in co-relation 8971. Up to 4426 conditions per place. [2023-11-19 08:04:17,944 INFO L140 encePairwiseOnDemand]: 1063/1068 looper letters, 37 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2023-11-19 08:04:17,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 241 flow [2023-11-19 08:04:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:04:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:04:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3182 transitions. [2023-11-19 08:04:17,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256286784376672 [2023-11-19 08:04:17,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3182 transitions. [2023-11-19 08:04:17,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3182 transitions. [2023-11-19 08:04:17,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:17,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3182 transitions. [2023-11-19 08:04:17,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 454.57142857142856) internal successors, (3182), 7 states have internal predecessors, (3182), 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) [2023-11-19 08:04:17,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1068.0) internal successors, (8544), 8 states have internal predecessors, (8544), 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) [2023-11-19 08:04:18,005 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1068.0) internal successors, (8544), 8 states have internal predecessors, (8544), 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) [2023-11-19 08:04:18,006 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 105 flow. Second operand 7 states and 3182 transitions. [2023-11-19 08:04:18,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 241 flow [2023-11-19 08:04:18,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 236 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:18,009 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 184 flow [2023-11-19 08:04:18,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-19 08:04:18,010 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-19 08:04:18,011 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 184 flow [2023-11-19 08:04:18,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 448.14285714285717) internal successors, (3137), 7 states have internal predecessors, (3137), 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) [2023-11-19 08:04:18,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:18,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 08:04:18,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:18,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:18,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:18,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:18,227 INFO L85 PathProgramCache]: Analyzing trace with hash 61791436, now seen corresponding path program 1 times [2023-11-19 08:04:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650297211] [2023-11-19 08:04:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:18,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:18,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:18,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650297211] [2023-11-19 08:04:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650297211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:18,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:18,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970639555] [2023-11-19 08:04:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:18,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:18,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 1068 [2023-11-19 08:04:18,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 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) [2023-11-19 08:04:18,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:18,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 1068 [2023-11-19 08:04:18,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:19,303 INFO L124 PetriNetUnfolderBase]: 3110/4429 cut-off events. [2023-11-19 08:04:19,303 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-19 08:04:19,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9033 conditions, 4429 events. 3110/4429 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 21033 event pairs, 2653 based on Foata normal form. 0/1715 useless extension candidates. Maximal degree in co-relation 8997. Up to 4423 conditions per place. [2023-11-19 08:04:19,352 INFO L140 encePairwiseOnDemand]: 1065/1068 looper letters, 40 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-11-19 08:04:19,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 249 flow [2023-11-19 08:04:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1380 transitions. [2023-11-19 08:04:19,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307116104868914 [2023-11-19 08:04:19,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1380 transitions. [2023-11-19 08:04:19,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1380 transitions. [2023-11-19 08:04:19,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:19,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1380 transitions. [2023-11-19 08:04:19,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.0) internal successors, (1380), 3 states have internal predecessors, (1380), 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) [2023-11-19 08:04:19,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:19,382 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 184 flow. Second operand 3 states and 1380 transitions. [2023-11-19 08:04:19,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 249 flow [2023-11-19 08:04:19,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 228 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:19,386 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 148 flow [2023-11-19 08:04:19,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-19 08:04:19,388 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-11-19 08:04:19,389 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 148 flow [2023-11-19 08:04:19,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 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) [2023-11-19 08:04:19,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:19,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:04:19,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:04:19,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:19,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1914713331, now seen corresponding path program 1 times [2023-11-19 08:04:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:19,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749027391] [2023-11-19 08:04:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:19,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749027391] [2023-11-19 08:04:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749027391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:19,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:19,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:19,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869971637] [2023-11-19 08:04:19,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:19,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 1068 [2023-11-19 08:04:19,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 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) [2023-11-19 08:04:19,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:19,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 1068 [2023-11-19 08:04:19,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:20,493 INFO L124 PetriNetUnfolderBase]: 3109/4428 cut-off events. [2023-11-19 08:04:20,494 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-19 08:04:20,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 4428 events. 3109/4428 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 20981 event pairs, 2653 based on Foata normal form. 1/1717 useless extension candidates. Maximal degree in co-relation 8995. Up to 4428 conditions per place. [2023-11-19 08:04:20,530 INFO L140 encePairwiseOnDemand]: 1065/1068 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-19 08:04:20,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 231 flow [2023-11-19 08:04:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1378 transitions. [2023-11-19 08:04:20,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43008739076154806 [2023-11-19 08:04:20,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1378 transitions. [2023-11-19 08:04:20,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1378 transitions. [2023-11-19 08:04:20,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:20,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1378 transitions. [2023-11-19 08:04:20,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.3333333333333) internal successors, (1378), 3 states have internal predecessors, (1378), 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) [2023-11-19 08:04:20,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:20,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:20,554 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 148 flow. Second operand 3 states and 1378 transitions. [2023-11-19 08:04:20,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 231 flow [2023-11-19 08:04:20,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:20,557 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 135 flow [2023-11-19 08:04:20,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-11-19 08:04:20,558 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-11-19 08:04:20,558 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 135 flow [2023-11-19 08:04:20,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 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) [2023-11-19 08:04:20,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:20,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:04:20,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:04:20,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:20,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:20,560 INFO L85 PathProgramCache]: Analyzing trace with hash -748734606, now seen corresponding path program 1 times [2023-11-19 08:04:20,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:20,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084414789] [2023-11-19 08:04:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:20,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084414789] [2023-11-19 08:04:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084414789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:20,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580224780] [2023-11-19 08:04:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:20,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:20,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1068 [2023-11-19 08:04:20,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 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) [2023-11-19 08:04:20,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:20,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1068 [2023-11-19 08:04:20,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:21,844 INFO L124 PetriNetUnfolderBase]: 4089/5844 cut-off events. [2023-11-19 08:04:21,845 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 08:04:21,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11888 conditions, 5844 events. 4089/5844 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 30354 event pairs, 2653 based on Foata normal form. 0/2373 useless extension candidates. Maximal degree in co-relation 11872. Up to 4429 conditions per place. [2023-11-19 08:04:21,885 INFO L140 encePairwiseOnDemand]: 1061/1068 looper letters, 70 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-19 08:04:21,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 338 flow [2023-11-19 08:04:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1414 transitions. [2023-11-19 08:04:21,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44132334581772786 [2023-11-19 08:04:21,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1414 transitions. [2023-11-19 08:04:21,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1414 transitions. [2023-11-19 08:04:21,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:21,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1414 transitions. [2023-11-19 08:04:21,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 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) [2023-11-19 08:04:21,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:21,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:21,909 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 135 flow. Second operand 3 states and 1414 transitions. [2023-11-19 08:04:21,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 338 flow [2023-11-19 08:04:21,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:21,912 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 151 flow [2023-11-19 08:04:21,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-19 08:04:21,916 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-19 08:04:21,916 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 151 flow [2023-11-19 08:04:21,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 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) [2023-11-19 08:04:21,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:21,917 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 08:04:21,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:04:21,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:21,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash -747911506, now seen corresponding path program 2 times [2023-11-19 08:04:21,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:21,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605084853] [2023-11-19 08:04:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:22,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605084853] [2023-11-19 08:04:22,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605084853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:22,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326966375] [2023-11-19 08:04:22,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:04:22,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:22,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:22,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:22,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:04:22,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:04:22,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:22,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:22,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:04:22,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:22,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326966375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:22,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:22,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 08:04:22,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846657987] [2023-11-19 08:04:22,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:22,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:22,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:04:22,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 449 out of 1068 [2023-11-19 08:04:22,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 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) [2023-11-19 08:04:22,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:22,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 449 of 1068 [2023-11-19 08:04:22,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:23,425 INFO L124 PetriNetUnfolderBase]: 4089/5843 cut-off events. [2023-11-19 08:04:23,425 INFO L125 PetriNetUnfolderBase]: For 826/826 co-relation queries the response was YES. [2023-11-19 08:04:23,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13195 conditions, 5843 events. 4089/5843 cut-off events. For 826/826 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 29244 event pairs, 3531 based on Foata normal form. 1/2665 useless extension candidates. Maximal degree in co-relation 13172. Up to 5838 conditions per place. [2023-11-19 08:04:23,471 INFO L140 encePairwiseOnDemand]: 1065/1068 looper letters, 40 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2023-11-19 08:04:23,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 231 flow [2023-11-19 08:04:23,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1385 transitions. [2023-11-19 08:04:23,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322721598002497 [2023-11-19 08:04:23,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1385 transitions. [2023-11-19 08:04:23,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1385 transitions. [2023-11-19 08:04:23,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:23,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1385 transitions. [2023-11-19 08:04:23,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 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) [2023-11-19 08:04:23,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:23,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:23,510 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 151 flow. Second operand 3 states and 1385 transitions. [2023-11-19 08:04:23,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 231 flow [2023-11-19 08:04:23,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 214 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 08:04:23,512 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-11-19 08:04:23,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-11-19 08:04:23,513 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-11-19 08:04:23,514 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-11-19 08:04:23,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 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) [2023-11-19 08:04:23,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:23,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:23,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 08:04:23,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:23,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:23,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:23,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1735934651, now seen corresponding path program 1 times [2023-11-19 08:04:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:23,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714863926] [2023-11-19 08:04:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:23,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714863926] [2023-11-19 08:04:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714863926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:23,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:23,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514170332] [2023-11-19 08:04:23,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:23,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:23,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1068 [2023-11-19 08:04:23,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 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) [2023-11-19 08:04:23,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:23,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1068 [2023-11-19 08:04:23,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:24,692 INFO L124 PetriNetUnfolderBase]: 3735/5343 cut-off events. [2023-11-19 08:04:24,692 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2023-11-19 08:04:24,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11878 conditions, 5343 events. 3735/5343 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 26283 event pairs, 3211 based on Foata normal form. 0/2515 useless extension candidates. Maximal degree in co-relation 11842. Up to 5343 conditions per place. [2023-11-19 08:04:24,724 INFO L140 encePairwiseOnDemand]: 1066/1068 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-19 08:04:24,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 218 flow [2023-11-19 08:04:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1381 transitions. [2023-11-19 08:04:24,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43102372034956304 [2023-11-19 08:04:24,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1381 transitions. [2023-11-19 08:04:24,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1381 transitions. [2023-11-19 08:04:24,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:24,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1381 transitions. [2023-11-19 08:04:24,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.3333333333333) internal successors, (1381), 3 states have internal predecessors, (1381), 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) [2023-11-19 08:04:24,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:24,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:24,746 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 3 states and 1381 transitions. [2023-11-19 08:04:24,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 218 flow [2023-11-19 08:04:24,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:24,748 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 122 flow [2023-11-19 08:04:24,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-19 08:04:24,749 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-11-19 08:04:24,750 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 122 flow [2023-11-19 08:04:24,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 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) [2023-11-19 08:04:24,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:24,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:24,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:04:24,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:24,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1735934614, now seen corresponding path program 1 times [2023-11-19 08:04:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:24,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485564615] [2023-11-19 08:04:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:24,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:04:24,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485564615] [2023-11-19 08:04:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485564615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:24,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:24,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:04:24,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332365936] [2023-11-19 08:04:24,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:24,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:24,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 450 out of 1068 [2023-11-19 08:04:24,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 452.3333333333333) internal successors, (1357), 3 states have internal predecessors, (1357), 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) [2023-11-19 08:04:24,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:24,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 450 of 1068 [2023-11-19 08:04:24,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:25,550 INFO L124 PetriNetUnfolderBase]: 2965/4251 cut-off events. [2023-11-19 08:04:25,550 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2023-11-19 08:04:25,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 4251 events. 2965/4251 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 20005 event pairs, 2513 based on Foata normal form. 0/2122 useless extension candidates. Maximal degree in co-relation 9394. Up to 4251 conditions per place. [2023-11-19 08:04:25,577 INFO L140 encePairwiseOnDemand]: 1065/1068 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-19 08:04:25,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 200 flow [2023-11-19 08:04:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1386 transitions. [2023-11-19 08:04:25,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43258426966292135 [2023-11-19 08:04:25,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1386 transitions. [2023-11-19 08:04:25,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1386 transitions. [2023-11-19 08:04:25,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:25,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1386 transitions. [2023-11-19 08:04:25,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 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) [2023-11-19 08:04:25,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:25,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:25,598 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 122 flow. Second operand 3 states and 1386 transitions. [2023-11-19 08:04:25,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 200 flow [2023-11-19 08:04:25,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:25,600 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 117 flow [2023-11-19 08:04:25,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-19 08:04:25,601 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-11-19 08:04:25,601 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 117 flow [2023-11-19 08:04:25,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 452.3333333333333) internal successors, (1357), 3 states have internal predecessors, (1357), 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) [2023-11-19 08:04:25,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:25,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:25,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:04:25,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:25,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1735934596, now seen corresponding path program 1 times [2023-11-19 08:04:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:25,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702873580] [2023-11-19 08:04:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:25,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:25,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:25,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702873580] [2023-11-19 08:04:25,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702873580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:25,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675976968] [2023-11-19 08:04:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:25,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:25,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:25,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:04:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:25,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:25,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:25,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675976968] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:25,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:04:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-11-19 08:04:25,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450413113] [2023-11-19 08:04:25,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:25,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:04:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:04:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:04:25,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 1068 [2023-11-19 08:04:25,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 117 flow. Second operand has 8 states, 8 states have (on average 442.125) internal successors, (3537), 8 states have internal predecessors, (3537), 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) [2023-11-19 08:04:25,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:25,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 1068 [2023-11-19 08:04:25,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:27,189 INFO L124 PetriNetUnfolderBase]: 3823/5493 cut-off events. [2023-11-19 08:04:27,190 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2023-11-19 08:04:27,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12044 conditions, 5493 events. 3823/5493 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 28538 event pairs, 1749 based on Foata normal form. 2/2842 useless extension candidates. Maximal degree in co-relation 12034. Up to 3003 conditions per place. [2023-11-19 08:04:27,231 INFO L140 encePairwiseOnDemand]: 1060/1068 looper letters, 84 selfloop transitions, 7 changer transitions 0/91 dead transitions. [2023-11-19 08:04:27,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 91 transitions, 405 flow [2023-11-19 08:04:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:04:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:04:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3174 transitions. [2023-11-19 08:04:27,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245585874799358 [2023-11-19 08:04:27,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3174 transitions. [2023-11-19 08:04:27,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3174 transitions. [2023-11-19 08:04:27,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:27,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3174 transitions. [2023-11-19 08:04:27,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 453.42857142857144) internal successors, (3174), 7 states have internal predecessors, (3174), 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) [2023-11-19 08:04:27,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1068.0) internal successors, (8544), 8 states have internal predecessors, (8544), 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) [2023-11-19 08:04:27,279 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1068.0) internal successors, (8544), 8 states have internal predecessors, (8544), 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) [2023-11-19 08:04:27,279 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 117 flow. Second operand 7 states and 3174 transitions. [2023-11-19 08:04:27,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 91 transitions, 405 flow [2023-11-19 08:04:27,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:27,283 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 136 flow [2023-11-19 08:04:27,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-11-19 08:04:27,284 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-19 08:04:27,284 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 136 flow [2023-11-19 08:04:27,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 442.125) internal successors, (3537), 8 states have internal predecessors, (3537), 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) [2023-11-19 08:04:27,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:27,286 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:27,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:27,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:27,499 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:27,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:27,499 INFO L85 PathProgramCache]: Analyzing trace with hash -370001971, now seen corresponding path program 1 times [2023-11-19 08:04:27,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292154201] [2023-11-19 08:04:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:04:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292154201] [2023-11-19 08:04:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292154201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:27,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:27,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584272313] [2023-11-19 08:04:27,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:27,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:27,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1068 [2023-11-19 08:04:27,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 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) [2023-11-19 08:04:27,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:27,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1068 [2023-11-19 08:04:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:28,779 INFO L124 PetriNetUnfolderBase]: 4943/7117 cut-off events. [2023-11-19 08:04:28,779 INFO L125 PetriNetUnfolderBase]: For 2623/2623 co-relation queries the response was YES. [2023-11-19 08:04:28,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16901 conditions, 7117 events. 4943/7117 cut-off events. For 2623/2623 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 37560 event pairs, 3277 based on Foata normal form. 0/3780 useless extension candidates. Maximal degree in co-relation 16889. Up to 5494 conditions per place. [2023-11-19 08:04:28,817 INFO L140 encePairwiseOnDemand]: 1062/1068 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-19 08:04:28,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 352 flow [2023-11-19 08:04:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:28,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1405 transitions. [2023-11-19 08:04:28,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385143570536829 [2023-11-19 08:04:28,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1405 transitions. [2023-11-19 08:04:28,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1405 transitions. [2023-11-19 08:04:28,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:28,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1405 transitions. [2023-11-19 08:04:28,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 468.3333333333333) internal successors, (1405), 3 states have internal predecessors, (1405), 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) [2023-11-19 08:04:28,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:28,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:28,837 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 136 flow. Second operand 3 states and 1405 transitions. [2023-11-19 08:04:28,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 352 flow [2023-11-19 08:04:28,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 332 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 08:04:28,840 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 140 flow [2023-11-19 08:04:28,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-19 08:04:28,841 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-19 08:04:28,841 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 140 flow [2023-11-19 08:04:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 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) [2023-11-19 08:04:28,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:28,842 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-19 08:04:28,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:04:28,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:28,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:28,843 INFO L85 PathProgramCache]: Analyzing trace with hash -370872220, now seen corresponding path program 2 times [2023-11-19 08:04:28,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:28,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550432986] [2023-11-19 08:04:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:28,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:04:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550432986] [2023-11-19 08:04:28,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550432986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:28,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310706520] [2023-11-19 08:04:28,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:04:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:28,939 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:28,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:04:29,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:04:29,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:29,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:29,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:04:29,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:29,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310706520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:29,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:29,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-19 08:04:29,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939085464] [2023-11-19 08:04:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:29,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:29,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 450 out of 1068 [2023-11-19 08:04:29,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 452.3333333333333) internal successors, (1357), 3 states have internal predecessors, (1357), 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) [2023-11-19 08:04:29,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:29,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 450 of 1068 [2023-11-19 08:04:29,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:30,009 INFO L124 PetriNetUnfolderBase]: 4020/5802 cut-off events. [2023-11-19 08:04:30,009 INFO L125 PetriNetUnfolderBase]: For 2182/2182 co-relation queries the response was YES. [2023-11-19 08:04:30,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14737 conditions, 5802 events. 4020/5802 cut-off events. For 2182/2182 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 28666 event pairs, 3458 based on Foata normal form. 0/3625 useless extension candidates. Maximal degree in co-relation 14725. Up to 5802 conditions per place. [2023-11-19 08:04:30,039 INFO L140 encePairwiseOnDemand]: 1065/1068 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-19 08:04:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 212 flow [2023-11-19 08:04:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1384 transitions. [2023-11-19 08:04:30,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43196004993757803 [2023-11-19 08:04:30,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1384 transitions. [2023-11-19 08:04:30,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1384 transitions. [2023-11-19 08:04:30,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:30,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1384 transitions. [2023-11-19 08:04:30,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.3333333333333) internal successors, (1384), 3 states have internal predecessors, (1384), 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) [2023-11-19 08:04:30,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:30,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:30,060 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 140 flow. Second operand 3 states and 1384 transitions. [2023-11-19 08:04:30,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 212 flow [2023-11-19 08:04:30,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:30,063 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 132 flow [2023-11-19 08:04:30,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-19 08:04:30,064 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-11-19 08:04:30,064 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 132 flow [2023-11-19 08:04:30,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 452.3333333333333) internal successors, (1357), 3 states have internal predecessors, (1357), 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) [2023-11-19 08:04:30,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:30,065 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-19 08:04:30,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:30,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:30,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:30,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:30,279 INFO L85 PathProgramCache]: Analyzing trace with hash -370872221, now seen corresponding path program 1 times [2023-11-19 08:04:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:30,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50723854] [2023-11-19 08:04:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:30,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:04:30,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50723854] [2023-11-19 08:04:30,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50723854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794797608] [2023-11-19 08:04:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:30,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:30,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:30,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:30,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:04:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:30,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:04:30,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:04:30,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:04:30,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794797608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:30,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:04:30,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-19 08:04:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611408791] [2023-11-19 08:04:30,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:30,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:04:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:04:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:30,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1068 [2023-11-19 08:04:30,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 449.6666666666667) internal successors, (2698), 6 states have internal predecessors, (2698), 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) [2023-11-19 08:04:30,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:30,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1068 [2023-11-19 08:04:30,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:31,888 INFO L124 PetriNetUnfolderBase]: 5006/7234 cut-off events. [2023-11-19 08:04:31,888 INFO L125 PetriNetUnfolderBase]: For 1310/1310 co-relation queries the response was YES. [2023-11-19 08:04:31,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18068 conditions, 7234 events. 5006/7234 cut-off events. For 1310/1310 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 39153 event pairs, 1694 based on Foata normal form. 0/4583 useless extension candidates. Maximal degree in co-relation 18055. Up to 2939 conditions per place. [2023-11-19 08:04:31,925 INFO L140 encePairwiseOnDemand]: 1064/1068 looper letters, 112 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2023-11-19 08:04:31,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 116 transitions, 577 flow [2023-11-19 08:04:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:04:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2349 transitions. [2023-11-19 08:04:32,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398876404494382 [2023-11-19 08:04:32,004 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2349 transitions. [2023-11-19 08:04:32,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2349 transitions. [2023-11-19 08:04:32,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:32,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2349 transitions. [2023-11-19 08:04:32,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 469.8) internal successors, (2349), 5 states have internal predecessors, (2349), 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) [2023-11-19 08:04:32,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1068.0) internal successors, (6408), 6 states have internal predecessors, (6408), 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) [2023-11-19 08:04:32,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1068.0) internal successors, (6408), 6 states have internal predecessors, (6408), 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) [2023-11-19 08:04:32,023 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 132 flow. Second operand 5 states and 2349 transitions. [2023-11-19 08:04:32,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 116 transitions, 577 flow [2023-11-19 08:04:32,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 116 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:32,036 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 153 flow [2023-11-19 08:04:32,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-19 08:04:32,037 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-19 08:04:32,037 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 153 flow [2023-11-19 08:04:32,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 449.6666666666667) internal successors, (2698), 6 states have internal predecessors, (2698), 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) [2023-11-19 08:04:32,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:32,039 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:32,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:32,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01009ac5-3dce-43fa-a2df-5f7bf1790da7/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:32,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:32,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1414841801, now seen corresponding path program 1 times [2023-11-19 08:04:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34449340] [2023-11-19 08:04:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:04:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34449340] [2023-11-19 08:04:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34449340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:32,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:32,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:04:32,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345633831] [2023-11-19 08:04:32,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:32,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:32,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:32,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:32,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:32,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 450 out of 1068 [2023-11-19 08:04:32,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 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) [2023-11-19 08:04:32,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:32,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 450 of 1068 [2023-11-19 08:04:32,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:33,236 INFO L124 PetriNetUnfolderBase]: 3881/5621 cut-off events. [2023-11-19 08:04:33,236 INFO L125 PetriNetUnfolderBase]: For 3621/3621 co-relation queries the response was YES. [2023-11-19 08:04:33,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14937 conditions, 5621 events. 3881/5621 cut-off events. For 3621/3621 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 27509 event pairs, 3307 based on Foata normal form. 0/3762 useless extension candidates. Maximal degree in co-relation 14923. Up to 5621 conditions per place. [2023-11-19 08:04:33,265 INFO L140 encePairwiseOnDemand]: 1065/1068 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-19 08:04:33,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 225 flow [2023-11-19 08:04:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1382 transitions. [2023-11-19 08:04:33,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4313358302122347 [2023-11-19 08:04:33,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1382 transitions. [2023-11-19 08:04:33,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1382 transitions. [2023-11-19 08:04:33,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:33,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1382 transitions. [2023-11-19 08:04:33,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.6666666666667) internal successors, (1382), 3 states have internal predecessors, (1382), 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) [2023-11-19 08:04:33,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:33,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:33,285 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 153 flow. Second operand 3 states and 1382 transitions. [2023-11-19 08:04:33,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 225 flow [2023-11-19 08:04:33,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 215 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 08:04:33,289 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 139 flow [2023-11-19 08:04:33,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-19 08:04:33,290 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-19 08:04:33,290 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 139 flow [2023-11-19 08:04:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 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) [2023-11-19 08:04:33,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:33,291 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:04:33,292 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1414841747, now seen corresponding path program 1 times [2023-11-19 08:04:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957551002] [2023-11-19 08:04:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:04:33,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:33,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957551002] [2023-11-19 08:04:33,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957551002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:33,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:33,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:04:33,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163833538] [2023-11-19 08:04:33,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:33,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:33,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:33,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:33,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:33,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 450 out of 1068 [2023-11-19 08:04:33,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 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) [2023-11-19 08:04:33,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:33,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 450 of 1068 [2023-11-19 08:04:33,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:34,248 INFO L124 PetriNetUnfolderBase]: 2898/4210 cut-off events. [2023-11-19 08:04:34,248 INFO L125 PetriNetUnfolderBase]: For 1676/1676 co-relation queries the response was YES. [2023-11-19 08:04:34,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10752 conditions, 4210 events. 2898/4210 cut-off events. For 1676/1676 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19564 event pairs, 2412 based on Foata normal form. 0/3015 useless extension candidates. Maximal degree in co-relation 10737. Up to 4210 conditions per place. [2023-11-19 08:04:34,267 INFO L140 encePairwiseOnDemand]: 1065/1068 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-19 08:04:34,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 37 transitions, 207 flow [2023-11-19 08:04:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1380 transitions. [2023-11-19 08:04:34,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307116104868914 [2023-11-19 08:04:34,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1380 transitions. [2023-11-19 08:04:34,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1380 transitions. [2023-11-19 08:04:34,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:34,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1380 transitions. [2023-11-19 08:04:34,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.0) internal successors, (1380), 3 states have internal predecessors, (1380), 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) [2023-11-19 08:04:34,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:34,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1068.0) internal successors, (4272), 4 states have internal predecessors, (4272), 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) [2023-11-19 08:04:34,287 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 139 flow. Second operand 3 states and 1380 transitions. [2023-11-19 08:04:34,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 37 transitions, 207 flow [2023-11-19 08:04:34,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 37 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:34,290 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 134 flow [2023-11-19 08:04:34,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1068, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-11-19 08:04:34,291 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-11-19 08:04:34,291 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 134 flow [2023-11-19 08:04:34,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 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) [2023-11-19 08:04:34,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:34,292 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:34,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:04:34,292 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-19 08:04:34,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1414841800, now seen corresponding path program 1 times [2023-11-19 08:04:34,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:34,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925105222] [2023-11-19 08:04:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:34,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms