./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl --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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:53,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:53,243 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:28:53,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:53,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:53,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:53,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:53,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:53,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:28:53,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:28:53,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:53,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:53,298 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:53,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:53,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:28:53,300 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:28:53,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:53,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:28:53,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:53,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:28:53,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:28:53,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:28:53,308 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:28:53,309 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:28:53,310 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:28:53,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:28:53,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:53,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:53,319 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:53,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:28:53,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:53,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:53,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:28:53,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:28:53,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:53,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:28:53,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:28:53,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:28:53,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:28:53,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:28:53,326 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:28:53,328 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_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2023-11-12 02:28:53,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:53,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:53,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:53,672 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:53,673 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:53,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-12 02:28:56,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:57,070 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:57,071 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-12 02:28:57,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/data/bb878b282/4144f904eb3843969d1ac9c9760ddec0/FLAGe08e908c9 [2023-11-12 02:28:57,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/data/bb878b282/4144f904eb3843969d1ac9c9760ddec0 [2023-11-12 02:28:57,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:57,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:57,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:57,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:57,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:57,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5a6a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57, skipping insertion in model container [2023-11-12 02:28:57,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:57,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:57,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:57,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:57,403 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:57,403 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:57,411 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:57,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57 WrapperNode [2023-11-12 02:28:57,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:57,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:57,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:57,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:57,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,493 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 364 [2023-11-12 02:28:57,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:57,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:57,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:57,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:57,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:57,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:57,552 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:57,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:57,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (1/1) ... [2023-11-12 02:28:57,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:57,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:57,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:57,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:28:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:28:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:28:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:28:57,637 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:28:57,829 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:57,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:58,556 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:58,949 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:58,950 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:28:58,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:58 BoogieIcfgContainer [2023-11-12 02:28:58,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:58,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:58,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:58,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:58,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:57" (1/3) ... [2023-11-12 02:28:58,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f627f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:58, skipping insertion in model container [2023-11-12 02:28:58,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:57" (2/3) ... [2023-11-12 02:28:58,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f627f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:58, skipping insertion in model container [2023-11-12 02:28:58,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:58" (3/3) ... [2023-11-12 02:28:58,967 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-11-12 02:28:58,977 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:28:58,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:58,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-12 02:28:58,990 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:28:59,253 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:28:59,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 327 transitions, 675 flow [2023-11-12 02:28:59,448 INFO L124 PetriNetUnfolderBase]: 22/324 cut-off events. [2023-11-12 02:28:59,448 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:28:59,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 324 events. 22/324 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 271. Up to 3 conditions per place. [2023-11-12 02:28:59,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 327 transitions, 675 flow [2023-11-12 02:28:59,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 300 transitions, 615 flow [2023-11-12 02:28:59,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:28:59,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 300 transitions, 615 flow [2023-11-12 02:28:59,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 300 transitions, 615 flow [2023-11-12 02:28:59,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 300 transitions, 615 flow [2023-11-12 02:28:59,581 INFO L124 PetriNetUnfolderBase]: 21/300 cut-off events. [2023-11-12 02:28:59,581 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:28:59,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 300 events. 21/300 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 373 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 271. Up to 3 conditions per place. [2023-11-12 02:28:59,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 5684 [2023-11-12 02:29:14,247 INFO L134 LiptonReduction]: Checked pairs total: 15553 [2023-11-12 02:29:14,247 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-11-12 02:29:14,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:14,272 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;@63d562ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:14,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-12 02:29:14,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:29:14,276 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:29:14,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:29:14,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:14,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:29:14,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:14,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash 47982, now seen corresponding path program 1 times [2023-11-12 02:29:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819787073] [2023-11-12 02:29:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:14,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:14,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819787073] [2023-11-12 02:29:14,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819787073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:14,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:14,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:14,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907258390] [2023-11-12 02:29:14,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:14,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:14,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:14,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:14,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 649 [2023-11-12 02:29:14,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:14,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:14,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 649 [2023-11-12 02:29:14,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:16,216 INFO L124 PetriNetUnfolderBase]: 6389/9064 cut-off events. [2023-11-12 02:29:16,217 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-11-12 02:29:16,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18487 conditions, 9064 events. 6389/9064 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 47657 event pairs, 5657 based on Foata normal form. 0/3748 useless extension candidates. Maximal degree in co-relation 17050. Up to 9060 conditions per place. [2023-11-12 02:29:16,300 INFO L140 encePairwiseOnDemand]: 627/649 looper letters, 53 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2023-11-12 02:29:16,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 255 flow [2023-11-12 02:29:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 867 transitions. [2023-11-12 02:29:16,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453004622496148 [2023-11-12 02:29:16,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 867 transitions. [2023-11-12 02:29:16,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 867 transitions. [2023-11-12 02:29:16,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:16,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 867 transitions. [2023-11-12 02:29:16,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:16,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:16,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:16,359 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 141 flow. Second operand 3 states and 867 transitions. [2023-11-12 02:29:16,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 255 flow [2023-11-12 02:29:16,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 246 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:29:16,386 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 178 flow [2023-11-12 02:29:16,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2023-11-12 02:29:16,393 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-11-12 02:29:16,394 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 178 flow [2023-11-12 02:29:16,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:16,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:16,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:29:16,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:29:16,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:16,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1489419, now seen corresponding path program 1 times [2023-11-12 02:29:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912088290] [2023-11-12 02:29:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912088290] [2023-11-12 02:29:16,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912088290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939062545] [2023-11-12 02:29:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:16,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:16,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:16,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:29:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:16,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:29:16,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:16,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939062545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:29:16,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:29:16,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:29:16,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230260581] [2023-11-12 02:29:16,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:29:16,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:29:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:16,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:29:16,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:29:17,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 649 [2023-11-12 02:29:17,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:17,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:17,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 649 [2023-11-12 02:29:17,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:18,515 INFO L124 PetriNetUnfolderBase]: 6407/9091 cut-off events. [2023-11-12 02:29:18,515 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-12 02:29:18,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18477 conditions, 9091 events. 6407/9091 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 47790 event pairs, 5657 based on Foata normal form. 0/3767 useless extension candidates. Maximal degree in co-relation 18322. Up to 9060 conditions per place. [2023-11-12 02:29:18,592 INFO L140 encePairwiseOnDemand]: 636/649 looper letters, 50 selfloop transitions, 37 changer transitions 0/87 dead transitions. [2023-11-12 02:29:18,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 472 flow [2023-11-12 02:29:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:29:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:29:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1944 transitions. [2023-11-12 02:29:18,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279110719788686 [2023-11-12 02:29:18,602 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1944 transitions. [2023-11-12 02:29:18,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1944 transitions. [2023-11-12 02:29:18,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:18,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1944 transitions. [2023-11-12 02:29:18,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:18,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 649.0) internal successors, (5192), 8 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:18,629 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 649.0) internal successors, (5192), 8 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:18,630 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 178 flow. Second operand 7 states and 1944 transitions. [2023-11-12 02:29:18,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 472 flow [2023-11-12 02:29:18,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:18,635 INFO L231 Difference]: Finished difference. Result has 64 places, 87 transitions, 408 flow [2023-11-12 02:29:18,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=64, PETRI_TRANSITIONS=87} [2023-11-12 02:29:18,636 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-11-12 02:29:18,636 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 87 transitions, 408 flow [2023-11-12 02:29:18,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 265.14285714285717) internal successors, (1856), 7 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:18,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:18,639 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-12 02:29:18,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:18,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:18,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:18,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash 46173998, now seen corresponding path program 1 times [2023-11-12 02:29:18,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:18,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197870003] [2023-11-12 02:29:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:18,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197870003] [2023-11-12 02:29:18,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197870003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:18,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:18,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:18,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063413127] [2023-11-12 02:29:18,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:18,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:18,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:19,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 649 [2023-11-12 02:29:19,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 87 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:19,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:19,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 649 [2023-11-12 02:29:19,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:20,415 INFO L124 PetriNetUnfolderBase]: 6398/9079 cut-off events. [2023-11-12 02:29:20,415 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-12 02:29:20,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18487 conditions, 9079 events. 6398/9079 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 47774 event pairs, 5657 based on Foata normal form. 0/3769 useless extension candidates. Maximal degree in co-relation 18393. Up to 9051 conditions per place. [2023-11-12 02:29:20,481 INFO L140 encePairwiseOnDemand]: 644/649 looper letters, 69 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-11-12 02:29:20,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 477 flow [2023-11-12 02:29:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-11-12 02:29:20,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345146379044684 [2023-11-12 02:29:20,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-11-12 02:29:20,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-11-12 02:29:20,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:20,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-11-12 02:29:20,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:20,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:20,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:20,498 INFO L175 Difference]: Start difference. First operand has 64 places, 87 transitions, 408 flow. Second operand 3 states and 846 transitions. [2023-11-12 02:29:20,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 477 flow [2023-11-12 02:29:20,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 440 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:20,506 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 302 flow [2023-11-12 02:29:20,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2023-11-12 02:29:20,508 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-11-12 02:29:20,509 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 302 flow [2023-11-12 02:29:20,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:20,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:20,510 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:29:20,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:29:20,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:20,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:20,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1423602413, now seen corresponding path program 2 times [2023-11-12 02:29:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:20,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189414594] [2023-11-12 02:29:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:20,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:20,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:20,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189414594] [2023-11-12 02:29:20,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189414594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:20,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697437261] [2023-11-12 02:29:20,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:29:20,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:20,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:20,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:20,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:29:20,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:29:20,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:29:20,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:29:20,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:29:20,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:20,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697437261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:20,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:29:20,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:29:20,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69070233] [2023-11-12 02:29:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:20,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:20,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:29:20,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 649 [2023-11-12 02:29:20,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:20,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:20,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 649 [2023-11-12 02:29:20,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:22,479 INFO L124 PetriNetUnfolderBase]: 6398/9078 cut-off events. [2023-11-12 02:29:22,480 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-12 02:29:22,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18467 conditions, 9078 events. 6398/9078 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 47778 event pairs, 5657 based on Foata normal form. 1/3773 useless extension candidates. Maximal degree in co-relation 18387. Up to 9073 conditions per place. [2023-11-12 02:29:22,562 INFO L140 encePairwiseOnDemand]: 646/649 looper letters, 68 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-11-12 02:29:22,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 440 flow [2023-11-12 02:29:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2023-11-12 02:29:22,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422187981510015 [2023-11-12 02:29:22,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2023-11-12 02:29:22,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2023-11-12 02:29:22,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:22,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2023-11-12 02:29:22,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:22,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:22,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:22,585 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 302 flow. Second operand 3 states and 861 transitions. [2023-11-12 02:29:22,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 440 flow [2023-11-12 02:29:22,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:22,598 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 292 flow [2023-11-12 02:29:22,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-11-12 02:29:22,601 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2023-11-12 02:29:22,602 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 292 flow [2023-11-12 02:29:22,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:22,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:22,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:22,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:22,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:22,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:22,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2082563740, now seen corresponding path program 1 times [2023-11-12 02:29:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:22,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183259541] [2023-11-12 02:29:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:22,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:22,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:22,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183259541] [2023-11-12 02:29:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183259541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:22,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:22,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536194637] [2023-11-12 02:29:22,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:22,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:23,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 649 [2023-11-12 02:29:23,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:23,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:23,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 649 [2023-11-12 02:29:23,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:24,216 INFO L124 PetriNetUnfolderBase]: 6538/9323 cut-off events. [2023-11-12 02:29:24,216 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-12 02:29:24,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19014 conditions, 9323 events. 6538/9323 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 49221 event pairs, 5780 based on Foata normal form. 90/4047 useless extension candidates. Maximal degree in co-relation 18883. Up to 9077 conditions per place. [2023-11-12 02:29:24,279 INFO L140 encePairwiseOnDemand]: 636/649 looper letters, 103 selfloop transitions, 10 changer transitions 1/114 dead transitions. [2023-11-12 02:29:24,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 114 transitions, 691 flow [2023-11-12 02:29:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:29:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1381 transitions. [2023-11-12 02:29:24,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42557781201849 [2023-11-12 02:29:24,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1381 transitions. [2023-11-12 02:29:24,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1381 transitions. [2023-11-12 02:29:24,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:24,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1381 transitions. [2023-11-12 02:29:24,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.2) internal successors, (1381), 5 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) [2023-11-12 02:29:24,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 649.0) internal successors, (3894), 6 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:24,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 649.0) internal successors, (3894), 6 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:24,303 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 292 flow. Second operand 5 states and 1381 transitions. [2023-11-12 02:29:24,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 114 transitions, 691 flow [2023-11-12 02:29:24,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 114 transitions, 679 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:24,308 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 381 flow [2023-11-12 02:29:24,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2023-11-12 02:29:24,310 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-11-12 02:29:24,310 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 381 flow [2023-11-12 02:29:24,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:24,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:24,311 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-12 02:29:24,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:29:24,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:24,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:24,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2120486217, now seen corresponding path program 1 times [2023-11-12 02:29:24,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:24,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352418747] [2023-11-12 02:29:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:24,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:24,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:24,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352418747] [2023-11-12 02:29:24,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352418747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:24,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114223712] [2023-11-12 02:29:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:24,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:24,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:24,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:24,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:29:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:24,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:29:24,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:24,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114223712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:29:24,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:29:24,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:29:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148399874] [2023-11-12 02:29:24,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:29:24,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:29:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:29:24,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:29:24,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 649 [2023-11-12 02:29:24,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 381 flow. Second operand has 13 states, 13 states have (on average 265.15384615384613) internal successors, (3447), 13 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:24,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:24,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 649 [2023-11-12 02:29:24,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:26,145 INFO L124 PetriNetUnfolderBase]: 6568/9383 cut-off events. [2023-11-12 02:29:26,145 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-11-12 02:29:26,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20686 conditions, 9383 events. 6568/9383 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 49609 event pairs, 5780 based on Foata normal form. 24/4024 useless extension candidates. Maximal degree in co-relation 20309. Up to 9305 conditions per place. [2023-11-12 02:29:26,216 INFO L140 encePairwiseOnDemand]: 640/649 looper letters, 49 selfloop transitions, 74 changer transitions 0/123 dead transitions. [2023-11-12 02:29:26,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 123 transitions, 897 flow [2023-11-12 02:29:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:29:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:29:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3290 transitions. [2023-11-12 02:29:26,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224447868515665 [2023-11-12 02:29:26,233 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3290 transitions. [2023-11-12 02:29:26,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3290 transitions. [2023-11-12 02:29:26,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:26,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3290 transitions. [2023-11-12 02:29:26,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 274.1666666666667) internal successors, (3290), 12 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:26,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 649.0) internal successors, (8437), 13 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:26,272 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 649.0) internal successors, (8437), 13 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:26,272 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 381 flow. Second operand 12 states and 3290 transitions. [2023-11-12 02:29:26,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 123 transitions, 897 flow [2023-11-12 02:29:26,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 123 transitions, 891 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:26,280 INFO L231 Difference]: Finished difference. Result has 80 places, 123 transitions, 885 flow [2023-11-12 02:29:26,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=885, PETRI_PLACES=80, PETRI_TRANSITIONS=123} [2023-11-12 02:29:26,281 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2023-11-12 02:29:26,282 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 123 transitions, 885 flow [2023-11-12 02:29:26,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 265.15384615384613) internal successors, (3447), 13 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:26,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:26,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:26,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:29:26,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:26,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash -982184570, now seen corresponding path program 1 times [2023-11-12 02:29:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:26,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560911334] [2023-11-12 02:29:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560911334] [2023-11-12 02:29:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560911334] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823522135] [2023-11-12 02:29:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:26,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:26,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:26,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:26,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:29:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:26,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:29:26,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:26,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823522135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:26,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:29:26,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-12 02:29:26,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587233353] [2023-11-12 02:29:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:26,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:26,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:29:26,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 649 [2023-11-12 02:29:26,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 123 transitions, 885 flow. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:26,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:26,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 649 [2023-11-12 02:29:26,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:27,984 INFO L124 PetriNetUnfolderBase]: 4958/7111 cut-off events. [2023-11-12 02:29:27,984 INFO L125 PetriNetUnfolderBase]: For 648/648 co-relation queries the response was YES. [2023-11-12 02:29:28,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15483 conditions, 7111 events. 4958/7111 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 36044 event pairs, 4296 based on Foata normal form. 0/3267 useless extension candidates. Maximal degree in co-relation 15279. Up to 7111 conditions per place. [2023-11-12 02:29:28,035 INFO L140 encePairwiseOnDemand]: 645/649 looper letters, 119 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2023-11-12 02:29:28,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 1113 flow [2023-11-12 02:29:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-11-12 02:29:28,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524910118130457 [2023-11-12 02:29:28,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-11-12 02:29:28,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-11-12 02:29:28,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:28,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-11-12 02:29:28,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:28,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:28,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:28,049 INFO L175 Difference]: Start difference. First operand has 80 places, 123 transitions, 885 flow. Second operand 3 states and 881 transitions. [2023-11-12 02:29:28,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 1113 flow [2023-11-12 02:29:28,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 120 transitions, 909 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-12 02:29:28,059 INFO L231 Difference]: Finished difference. Result has 74 places, 120 transitions, 671 flow [2023-11-12 02:29:28,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=671, PETRI_PLACES=74, PETRI_TRANSITIONS=120} [2023-11-12 02:29:28,060 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 9 predicate places. [2023-11-12 02:29:28,060 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 120 transitions, 671 flow [2023-11-12 02:29:28,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:28,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:28,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:28,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:29:28,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:28,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -382949153, now seen corresponding path program 1 times [2023-11-12 02:29:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283829559] [2023-11-12 02:29:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283829559] [2023-11-12 02:29:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283829559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:28,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:28,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:28,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709520353] [2023-11-12 02:29:28,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:28,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:28,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:28,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:28,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:28,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 649 [2023-11-12 02:29:28,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 120 transitions, 671 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:28,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:28,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 649 [2023-11-12 02:29:28,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:29,419 INFO L124 PetriNetUnfolderBase]: 6077/8640 cut-off events. [2023-11-12 02:29:29,419 INFO L125 PetriNetUnfolderBase]: For 890/890 co-relation queries the response was YES. [2023-11-12 02:29:29,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18553 conditions, 8640 events. 6077/8640 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 44320 event pairs, 1900 based on Foata normal form. 146/4085 useless extension candidates. Maximal degree in co-relation 18532. Up to 6206 conditions per place. [2023-11-12 02:29:29,496 INFO L140 encePairwiseOnDemand]: 638/649 looper letters, 141 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2023-11-12 02:29:29,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 146 transitions, 1023 flow [2023-11-12 02:29:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 904 transitions. [2023-11-12 02:29:29,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643040575243965 [2023-11-12 02:29:29,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 904 transitions. [2023-11-12 02:29:29,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 904 transitions. [2023-11-12 02:29:29,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:29,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 904 transitions. [2023-11-12 02:29:29,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:29,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:29,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:29,514 INFO L175 Difference]: Start difference. First operand has 74 places, 120 transitions, 671 flow. Second operand 3 states and 904 transitions. [2023-11-12 02:29:29,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 146 transitions, 1023 flow [2023-11-12 02:29:29,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 1022 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:29,525 INFO L231 Difference]: Finished difference. Result has 76 places, 124 transitions, 713 flow [2023-11-12 02:29:29,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=713, PETRI_PLACES=76, PETRI_TRANSITIONS=124} [2023-11-12 02:29:29,527 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 11 predicate places. [2023-11-12 02:29:29,527 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 124 transitions, 713 flow [2023-11-12 02:29:29,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:29,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:29,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:29,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:29:29,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:29,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1886112474, now seen corresponding path program 1 times [2023-11-12 02:29:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451222379] [2023-11-12 02:29:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451222379] [2023-11-12 02:29:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451222379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:29,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087804998] [2023-11-12 02:29:29,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:29,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:29,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:29,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 649 [2023-11-12 02:29:29,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 124 transitions, 713 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:29,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:29,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 649 [2023-11-12 02:29:29,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:30,717 INFO L124 PetriNetUnfolderBase]: 5610/7971 cut-off events. [2023-11-12 02:29:30,717 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2023-11-12 02:29:30,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19457 conditions, 7971 events. 5610/7971 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 39830 event pairs, 1642 based on Foata normal form. 68/3580 useless extension candidates. Maximal degree in co-relation 19434. Up to 7359 conditions per place. [2023-11-12 02:29:30,772 INFO L140 encePairwiseOnDemand]: 639/649 looper letters, 135 selfloop transitions, 5 changer transitions 1/141 dead transitions. [2023-11-12 02:29:30,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 141 transitions, 1038 flow [2023-11-12 02:29:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 894 transitions. [2023-11-12 02:29:30,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591679506933744 [2023-11-12 02:29:30,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 894 transitions. [2023-11-12 02:29:30,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 894 transitions. [2023-11-12 02:29:30,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:30,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 894 transitions. [2023-11-12 02:29:30,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:30,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:30,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:30,785 INFO L175 Difference]: Start difference. First operand has 76 places, 124 transitions, 713 flow. Second operand 3 states and 894 transitions. [2023-11-12 02:29:30,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 141 transitions, 1038 flow [2023-11-12 02:29:30,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 141 transitions, 1033 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:30,794 INFO L231 Difference]: Finished difference. Result has 78 places, 127 transitions, 740 flow [2023-11-12 02:29:30,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=78, PETRI_TRANSITIONS=127} [2023-11-12 02:29:30,795 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2023-11-12 02:29:30,795 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 127 transitions, 740 flow [2023-11-12 02:29:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:30,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:30,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:30,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:29:30,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:30,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1313243459, now seen corresponding path program 1 times [2023-11-12 02:29:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:30,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040527055] [2023-11-12 02:29:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:30,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040527055] [2023-11-12 02:29:30,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040527055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:30,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:30,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:30,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610326216] [2023-11-12 02:29:30,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:30,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:30,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:30,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:30,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 649 [2023-11-12 02:29:30,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 127 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:30,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:30,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 649 [2023-11-12 02:29:30,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:31,614 INFO L124 PetriNetUnfolderBase]: 4233/6146 cut-off events. [2023-11-12 02:29:31,614 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2023-11-12 02:29:31,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16811 conditions, 6146 events. 4233/6146 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 31387 event pairs, 1602 based on Foata normal form. 12/2783 useless extension candidates. Maximal degree in co-relation 16786. Up to 5923 conditions per place. [2023-11-12 02:29:31,656 INFO L140 encePairwiseOnDemand]: 645/649 looper letters, 133 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2023-11-12 02:29:31,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 136 transitions, 1037 flow [2023-11-12 02:29:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2023-11-12 02:29:31,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530046224961479 [2023-11-12 02:29:31,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2023-11-12 02:29:31,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2023-11-12 02:29:31,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:31,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2023-11-12 02:29:31,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:31,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:31,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:31,666 INFO L175 Difference]: Start difference. First operand has 78 places, 127 transitions, 740 flow. Second operand 3 states and 882 transitions. [2023-11-12 02:29:31,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 136 transitions, 1037 flow [2023-11-12 02:29:31,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 136 transitions, 1032 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:31,675 INFO L231 Difference]: Finished difference. Result has 80 places, 129 transitions, 758 flow [2023-11-12 02:29:31,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=758, PETRI_PLACES=80, PETRI_TRANSITIONS=129} [2023-11-12 02:29:31,676 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2023-11-12 02:29:31,676 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 129 transitions, 758 flow [2023-11-12 02:29:31,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:31,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:31,677 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-12 02:29:31,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:29:31,678 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:31,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1263995255, now seen corresponding path program 2 times [2023-11-12 02:29:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:31,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096744064] [2023-11-12 02:29:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:31,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:31,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096744064] [2023-11-12 02:29:31,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096744064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:31,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311449142] [2023-11-12 02:29:31,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:29:31,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:31,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:31,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:31,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:29:32,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:29:32,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:29:32,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:29:32,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:29:32,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311449142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:32,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:29:32,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-12 02:29:32,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528936810] [2023-11-12 02:29:32,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:32,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:32,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:29:32,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 649 [2023-11-12 02:29:32,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 129 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:32,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:32,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 649 [2023-11-12 02:29:32,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:32,783 INFO L124 PetriNetUnfolderBase]: 3345/4860 cut-off events. [2023-11-12 02:29:32,783 INFO L125 PetriNetUnfolderBase]: For 1328/1328 co-relation queries the response was YES. [2023-11-12 02:29:32,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13865 conditions, 4860 events. 3345/4860 cut-off events. For 1328/1328 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 23678 event pairs, 1820 based on Foata normal form. 2/2339 useless extension candidates. Maximal degree in co-relation 13838. Up to 4815 conditions per place. [2023-11-12 02:29:32,816 INFO L140 encePairwiseOnDemand]: 644/649 looper letters, 104 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2023-11-12 02:29:32,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 126 transitions, 982 flow [2023-11-12 02:29:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:29:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1119 transitions. [2023-11-12 02:29:32,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310477657935285 [2023-11-12 02:29:32,822 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1119 transitions. [2023-11-12 02:29:32,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1119 transitions. [2023-11-12 02:29:32,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:32,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1119 transitions. [2023-11-12 02:29:32,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.75) internal successors, (1119), 4 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:32,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 649.0) internal successors, (3245), 5 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:32,833 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 649.0) internal successors, (3245), 5 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:32,833 INFO L175 Difference]: Start difference. First operand has 80 places, 129 transitions, 758 flow. Second operand 4 states and 1119 transitions. [2023-11-12 02:29:32,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 126 transitions, 982 flow [2023-11-12 02:29:32,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 973 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:32,842 INFO L231 Difference]: Finished difference. Result has 79 places, 126 transitions, 765 flow [2023-11-12 02:29:32,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=765, PETRI_PLACES=79, PETRI_TRANSITIONS=126} [2023-11-12 02:29:32,843 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2023-11-12 02:29:32,844 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 126 transitions, 765 flow [2023-11-12 02:29:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:32,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:32,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:32,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:33,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:29:33,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:33,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1638441713, now seen corresponding path program 1 times [2023-11-12 02:29:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047703850] [2023-11-12 02:29:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047703850] [2023-11-12 02:29:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047703850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:33,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:33,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:33,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95875397] [2023-11-12 02:29:33,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:33,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:33,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 649 [2023-11-12 02:29:33,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 126 transitions, 765 flow. Second operand has 4 states, 4 states have (on average 262.25) internal successors, (1049), 4 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:33,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:33,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 649 [2023-11-12 02:29:33,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:33,996 INFO L124 PetriNetUnfolderBase]: 3484/5133 cut-off events. [2023-11-12 02:29:33,996 INFO L125 PetriNetUnfolderBase]: For 935/935 co-relation queries the response was YES. [2023-11-12 02:29:34,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14200 conditions, 5133 events. 3484/5133 cut-off events. For 935/935 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 25187 event pairs, 1940 based on Foata normal form. 32/2624 useless extension candidates. Maximal degree in co-relation 14172. Up to 4848 conditions per place. [2023-11-12 02:29:34,032 INFO L140 encePairwiseOnDemand]: 640/649 looper letters, 125 selfloop transitions, 14 changer transitions 25/164 dead transitions. [2023-11-12 02:29:34,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 164 transitions, 1293 flow [2023-11-12 02:29:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:29:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1105 transitions. [2023-11-12 02:29:34,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42565485362095534 [2023-11-12 02:29:34,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1105 transitions. [2023-11-12 02:29:34,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1105 transitions. [2023-11-12 02:29:34,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:34,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1105 transitions. [2023-11-12 02:29:34,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:34,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 649.0) internal successors, (3245), 5 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:34,048 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 649.0) internal successors, (3245), 5 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:34,048 INFO L175 Difference]: Start difference. First operand has 79 places, 126 transitions, 765 flow. Second operand 4 states and 1105 transitions. [2023-11-12 02:29:34,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 164 transitions, 1293 flow [2023-11-12 02:29:34,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 164 transitions, 1270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:34,063 INFO L231 Difference]: Finished difference. Result has 81 places, 126 transitions, 783 flow [2023-11-12 02:29:34,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=783, PETRI_PLACES=81, PETRI_TRANSITIONS=126} [2023-11-12 02:29:34,064 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2023-11-12 02:29:34,064 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 126 transitions, 783 flow [2023-11-12 02:29:34,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.25) internal successors, (1049), 4 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:34,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:34,065 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-11-12 02:29:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:29:34,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:34,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1731152407, now seen corresponding path program 1 times [2023-11-12 02:29:34,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:34,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210409580] [2023-11-12 02:29:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:34,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210409580] [2023-11-12 02:29:34,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210409580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:34,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112387601] [2023-11-12 02:29:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:34,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:34,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:34,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:29:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:34,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:29:34,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:34,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:34,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112387601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:29:34,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:29:34,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-12 02:29:34,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019509388] [2023-11-12 02:29:34,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:29:34,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-12 02:29:34,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-12 02:29:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-12 02:29:35,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 649 [2023-11-12 02:29:35,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 126 transitions, 783 flow. Second operand has 25 states, 25 states have (on average 265.12) internal successors, (6628), 25 states have internal predecessors, (6628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:35,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:35,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 649 [2023-11-12 02:29:35,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:36,285 INFO L124 PetriNetUnfolderBase]: 3568/5301 cut-off events. [2023-11-12 02:29:36,285 INFO L125 PetriNetUnfolderBase]: For 2822/2822 co-relation queries the response was YES. [2023-11-12 02:29:36,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15387 conditions, 5301 events. 3568/5301 cut-off events. For 2822/2822 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 26462 event pairs, 1940 based on Foata normal form. 48/2761 useless extension candidates. Maximal degree in co-relation 15359. Up to 5085 conditions per place. [2023-11-12 02:29:36,333 INFO L140 encePairwiseOnDemand]: 641/649 looper letters, 53 selfloop transitions, 157 changer transitions 0/210 dead transitions. [2023-11-12 02:29:36,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 210 transitions, 1791 flow [2023-11-12 02:29:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-12 02:29:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-12 02:29:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6524 transitions. [2023-11-12 02:29:36,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41884951206985105 [2023-11-12 02:29:36,354 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6524 transitions. [2023-11-12 02:29:36,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6524 transitions. [2023-11-12 02:29:36,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:36,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6524 transitions. [2023-11-12 02:29:36,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 271.8333333333333) internal successors, (6524), 24 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:36,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 649.0) internal successors, (16225), 25 states have internal predecessors, (16225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:36,404 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 649.0) internal successors, (16225), 25 states have internal predecessors, (16225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:36,405 INFO L175 Difference]: Start difference. First operand has 81 places, 126 transitions, 783 flow. Second operand 24 states and 6524 transitions. [2023-11-12 02:29:36,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 210 transitions, 1791 flow [2023-11-12 02:29:36,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 210 transitions, 1760 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:36,416 INFO L231 Difference]: Finished difference. Result has 115 places, 210 transitions, 1806 flow [2023-11-12 02:29:36,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1806, PETRI_PLACES=115, PETRI_TRANSITIONS=210} [2023-11-12 02:29:36,417 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 50 predicate places. [2023-11-12 02:29:36,418 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 210 transitions, 1806 flow [2023-11-12 02:29:36,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 265.12) internal successors, (6628), 25 states have internal predecessors, (6628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:36,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:36,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:36,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:36,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:29:36,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:36,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:36,626 INFO L85 PathProgramCache]: Analyzing trace with hash 300998739, now seen corresponding path program 1 times [2023-11-12 02:29:36,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:36,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506847900] [2023-11-12 02:29:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:36,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:29:36,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:36,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506847900] [2023-11-12 02:29:36,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506847900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:36,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:36,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284948055] [2023-11-12 02:29:36,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:36,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:36,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:36,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:36,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:36,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 649 [2023-11-12 02:29:36,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 210 transitions, 1806 flow. Second operand has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:36,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:36,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 649 [2023-11-12 02:29:36,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:37,622 INFO L124 PetriNetUnfolderBase]: 3802/5719 cut-off events. [2023-11-12 02:29:37,622 INFO L125 PetriNetUnfolderBase]: For 1732/1732 co-relation queries the response was YES. [2023-11-12 02:29:37,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17055 conditions, 5719 events. 3802/5719 cut-off events. For 1732/1732 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 30093 event pairs, 2120 based on Foata normal form. 0/2953 useless extension candidates. Maximal degree in co-relation 17014. Up to 4922 conditions per place. [2023-11-12 02:29:37,678 INFO L140 encePairwiseOnDemand]: 645/649 looper letters, 238 selfloop transitions, 3 changer transitions 0/241 dead transitions. [2023-11-12 02:29:37,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 241 transitions, 2403 flow [2023-11-12 02:29:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2023-11-12 02:29:37,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648176682074987 [2023-11-12 02:29:37,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 905 transitions. [2023-11-12 02:29:37,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 905 transitions. [2023-11-12 02:29:37,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:37,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 905 transitions. [2023-11-12 02:29:37,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:37,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:37,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 649.0) internal successors, (2596), 4 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:37,694 INFO L175 Difference]: Start difference. First operand has 115 places, 210 transitions, 1806 flow. Second operand 3 states and 905 transitions. [2023-11-12 02:29:37,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 241 transitions, 2403 flow [2023-11-12 02:29:37,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 241 transitions, 1985 flow, removed 100 selfloop flow, removed 11 redundant places. [2023-11-12 02:29:37,717 INFO L231 Difference]: Finished difference. Result has 106 places, 209 transitions, 1388 flow [2023-11-12 02:29:37,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1388, PETRI_PLACES=106, PETRI_TRANSITIONS=209} [2023-11-12 02:29:37,718 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 41 predicate places. [2023-11-12 02:29:37,718 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 209 transitions, 1388 flow [2023-11-12 02:29:37,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:37,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:37,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:37,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:29:37,719 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:37,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash 300998854, now seen corresponding path program 1 times [2023-11-12 02:29:37,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:37,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915129855] [2023-11-12 02:29:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:37,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915129855] [2023-11-12 02:29:38,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915129855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199252891] [2023-11-12 02:29:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:38,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:38,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:38,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:29:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:38,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:29:38,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:38,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 02:29:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:38,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:38,758 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-12 02:29:38,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-11-12 02:29:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:29:38,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199252891] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:38,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:29:38,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 17 [2023-11-12 02:29:38,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383167274] [2023-11-12 02:29:38,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:38,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:29:38,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:38,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:29:38,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:29:38,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 649 [2023-11-12 02:29:38,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 209 transitions, 1388 flow. Second operand has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:38,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:38,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 649 [2023-11-12 02:29:38,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:40,357 INFO L124 PetriNetUnfolderBase]: 3982/6063 cut-off events. [2023-11-12 02:29:40,357 INFO L125 PetriNetUnfolderBase]: For 2103/2103 co-relation queries the response was YES. [2023-11-12 02:29:40,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17673 conditions, 6063 events. 3982/6063 cut-off events. For 2103/2103 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 32747 event pairs, 1156 based on Foata normal form. 16/3298 useless extension candidates. Maximal degree in co-relation 17633. Up to 3865 conditions per place. [2023-11-12 02:29:40,430 INFO L140 encePairwiseOnDemand]: 638/649 looper letters, 249 selfloop transitions, 13 changer transitions 0/262 dead transitions. [2023-11-12 02:29:40,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 262 transitions, 2095 flow [2023-11-12 02:29:40,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:29:40,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:29:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1650 transitions. [2023-11-12 02:29:40,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423728813559322 [2023-11-12 02:29:40,437 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1650 transitions. [2023-11-12 02:29:40,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1650 transitions. [2023-11-12 02:29:40,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:40,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1650 transitions. [2023-11-12 02:29:40,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:40,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 649.0) internal successors, (4543), 7 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:40,450 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 649.0) internal successors, (4543), 7 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:40,450 INFO L175 Difference]: Start difference. First operand has 106 places, 209 transitions, 1388 flow. Second operand 6 states and 1650 transitions. [2023-11-12 02:29:40,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 262 transitions, 2095 flow [2023-11-12 02:29:40,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 262 transitions, 2088 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:40,475 INFO L231 Difference]: Finished difference. Result has 114 places, 217 transitions, 1481 flow [2023-11-12 02:29:40,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1481, PETRI_PLACES=114, PETRI_TRANSITIONS=217} [2023-11-12 02:29:40,476 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 49 predicate places. [2023-11-12 02:29:40,476 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 217 transitions, 1481 flow [2023-11-12 02:29:40,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:40,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:40,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:40,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-12 02:29:40,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:29:40,683 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:40,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:40,684 INFO L85 PathProgramCache]: Analyzing trace with hash 299153734, now seen corresponding path program 2 times [2023-11-12 02:29:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:40,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866989319] [2023-11-12 02:29:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:40,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:41,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:41,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866989319] [2023-11-12 02:29:41,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866989319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:41,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755249099] [2023-11-12 02:29:41,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:29:41,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:41,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:41,308 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:41,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:29:41,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:29:41,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:29:41,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:29:41,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:41,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-12 02:29:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:29:41,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:41,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755249099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:41,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:29:41,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-11-12 02:29:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296967388] [2023-11-12 02:29:41,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:41,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:29:41,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:29:41,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:29:41,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 649 [2023-11-12 02:29:41,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 217 transitions, 1481 flow. Second operand has 6 states, 6 states have (on average 263.3333333333333) internal successors, (1580), 6 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:41,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:41,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 649 [2023-11-12 02:29:41,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:43,179 INFO L124 PetriNetUnfolderBase]: 4096/6293 cut-off events. [2023-11-12 02:29:43,179 INFO L125 PetriNetUnfolderBase]: For 4482/4482 co-relation queries the response was YES. [2023-11-12 02:29:43,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19780 conditions, 6293 events. 4096/6293 cut-off events. For 4482/4482 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 34342 event pairs, 1744 based on Foata normal form. 20/3676 useless extension candidates. Maximal degree in co-relation 19735. Up to 5465 conditions per place. [2023-11-12 02:29:43,251 INFO L140 encePairwiseOnDemand]: 640/649 looper letters, 249 selfloop transitions, 8 changer transitions 2/259 dead transitions. [2023-11-12 02:29:43,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 259 transitions, 2169 flow [2023-11-12 02:29:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:29:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:29:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1654 transitions. [2023-11-12 02:29:43,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42475603492552644 [2023-11-12 02:29:43,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1654 transitions. [2023-11-12 02:29:43,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1654 transitions. [2023-11-12 02:29:43,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:43,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1654 transitions. [2023-11-12 02:29:43,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.6666666666667) internal successors, (1654), 6 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:43,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 649.0) internal successors, (4543), 7 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:43,264 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 649.0) internal successors, (4543), 7 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:43,265 INFO L175 Difference]: Start difference. First operand has 114 places, 217 transitions, 1481 flow. Second operand 6 states and 1654 transitions. [2023-11-12 02:29:43,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 259 transitions, 2169 flow [2023-11-12 02:29:43,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 259 transitions, 2158 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:29:43,293 INFO L231 Difference]: Finished difference. Result has 121 places, 222 transitions, 1543 flow [2023-11-12 02:29:43,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=649, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1543, PETRI_PLACES=121, PETRI_TRANSITIONS=222} [2023-11-12 02:29:43,294 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 56 predicate places. [2023-11-12 02:29:43,294 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 222 transitions, 1543 flow [2023-11-12 02:29:43,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.3333333333333) internal successors, (1580), 6 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:43,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:43,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:43,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:29:43,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:29:43,501 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-12 02:29:43,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:43,502 INFO L85 PathProgramCache]: Analyzing trace with hash 296241425, now seen corresponding path program 1 times [2023-11-12 02:29:43,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:43,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079480695] [2023-11-12 02:29:43,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:43,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:29:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079480695] [2023-11-12 02:29:43,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079480695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:29:43,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791692797] [2023-11-12 02:29:43,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:43,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:29:43,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:43,883 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:29:43,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb52a1ca-9b31-406d-9f8e-eddcfd95ce91/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:29:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:44,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:29:44,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:44,111 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-12 02:29:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:29:44,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:44,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791692797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:44,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:29:44,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-12 02:29:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092683239] [2023-11-12 02:29:44,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:44,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:29:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:44,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:29:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:29:44,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 649 [2023-11-12 02:29:44,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 222 transitions, 1543 flow. Second operand has 5 states, 5 states have (on average 267.8) internal successors, (1339), 5 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:44,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:44,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 649 [2023-11-12 02:29:44,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand