./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:24,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:24,466 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:56:24,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:24,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:24,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:24,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:24,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:24,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:24,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:24,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:24,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:24,500 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:24,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:24,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:24,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:24,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:24,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:24,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:24,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:24,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:24,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:24,505 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:56:24,505 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:24,506 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:24,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:24,506 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:24,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:24,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:24,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:24,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:24,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:24,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:24,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:24,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:24,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:24,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:24,511 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:24,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:24,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:24,512 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:24,512 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_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f [2023-11-19 07:56:24,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:24,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:24,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:24,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:24,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:24,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-11-19 07:56:28,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:28,281 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:28,281 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-11-19 07:56:28,293 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/data/1fba4f574/1d07a327e8544ad689ad1436942d42f1/FLAGbf6f33c98 [2023-11-19 07:56:28,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/data/1fba4f574/1d07a327e8544ad689ad1436942d42f1 [2023-11-19 07:56:28,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:28,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:28,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:28,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:28,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:28,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15dd84ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28, skipping insertion in model container [2023-11-19 07:56:28,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:28,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:28,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:28,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:28,799 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:28,799 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:28,808 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:28,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28 WrapperNode [2023-11-19 07:56:28,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:28,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:28,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:28,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:28,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,902 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 383 [2023-11-19 07:56:28,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:28,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:28,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:28,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:28,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:28,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:28,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:28,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:28,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:28,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (1/1) ... [2023-11-19 07:56:29,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:29,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:29,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:56:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:56:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:56:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:56:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:56:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:56:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:56:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:56:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:56:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:56:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:56:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:29,086 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:56:29,222 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:29,225 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:30,032 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:30,549 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:30,549 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:56:30,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:30 BoogieIcfgContainer [2023-11-19 07:56:30,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:30,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:30,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:30,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:30,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:28" (1/3) ... [2023-11-19 07:56:30,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6c6be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:30, skipping insertion in model container [2023-11-19 07:56:30,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:28" (2/3) ... [2023-11-19 07:56:30,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6c6be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:30, skipping insertion in model container [2023-11-19 07:56:30,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:30" (3/3) ... [2023-11-19 07:56:30,564 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2023-11-19 07:56:30,574 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:30,585 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:30,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:56:30,586 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:30,835 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:56:30,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 313 transitions, 654 flow [2023-11-19 07:56:31,089 INFO L124 PetriNetUnfolderBase]: 36/309 cut-off events. [2023-11-19 07:56:31,090 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:56:31,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 309 events. 36/309 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 345 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-11-19 07:56:31,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 313 transitions, 654 flow [2023-11-19 07:56:31,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 283 transitions, 587 flow [2023-11-19 07:56:31,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:31,140 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 283 transitions, 587 flow [2023-11-19 07:56:31,143 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 283 transitions, 587 flow [2023-11-19 07:56:31,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 283 transitions, 587 flow [2023-11-19 07:56:31,233 INFO L124 PetriNetUnfolderBase]: 35/283 cut-off events. [2023-11-19 07:56:31,233 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:56:31,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 283 events. 35/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 324 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-11-19 07:56:31,241 INFO L119 LiptonReduction]: Number of co-enabled transitions 7420 [2023-11-19 07:56:49,757 INFO L134 LiptonReduction]: Checked pairs total: 11507 [2023-11-19 07:56:49,757 INFO L136 LiptonReduction]: Total number of compositions: 303 [2023-11-19 07:56:49,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:49,799 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;@10ac120c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:49,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-19 07:56:49,805 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:49,805 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:56:49,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:49,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:49,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:49,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:56:49,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash 50292, now seen corresponding path program 1 times [2023-11-19 07:56:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534908840] [2023-11-19 07:56:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:50,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:50,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534908840] [2023-11-19 07:56:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534908840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:50,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:50,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:50,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868434729] [2023-11-19 07:56:50,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:50,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:50,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:50,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:50,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 616 [2023-11-19 07:56:50,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:50,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:50,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 616 [2023-11-19 07:56:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:59,666 INFO L124 PetriNetUnfolderBase]: 42614/55741 cut-off events. [2023-11-19 07:56:59,666 INFO L125 PetriNetUnfolderBase]: For 2618/2618 co-relation queries the response was YES. [2023-11-19 07:56:59,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112323 conditions, 55741 events. 42614/55741 cut-off events. For 2618/2618 co-relation queries the response was YES. Maximal size of possible extension queue 3572. Compared 307700 event pairs, 38274 based on Foata normal form. 0/24021 useless extension candidates. Maximal degree in co-relation 99484. Up to 54479 conditions per place. [2023-11-19 07:57:00,191 INFO L140 encePairwiseOnDemand]: 599/616 looper letters, 54 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-11-19 07:57:00,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 261 flow [2023-11-19 07:57:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-11-19 07:57:00,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41504329004329005 [2023-11-19 07:57:00,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-11-19 07:57:00,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-11-19 07:57:00,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:00,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-11-19 07:57:00,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:00,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:00,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:00,250 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 767 transitions. [2023-11-19 07:57:00,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 261 flow [2023-11-19 07:57:00,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 248 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:57:00,313 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 166 flow [2023-11-19 07:57:00,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-11-19 07:57:00,320 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-19 07:57:00,321 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 166 flow [2023-11-19 07:57:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:00,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:00,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:57:00,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:00,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:57:00,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1561542, now seen corresponding path program 1 times [2023-11-19 07:57:00,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597831044] [2023-11-19 07:57:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:00,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:00,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597831044] [2023-11-19 07:57:00,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597831044] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871577457] [2023-11-19 07:57:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:00,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:00,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:00,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:00,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:57:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:00,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:00,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:00,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871577457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:00,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:00,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:57:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442588174] [2023-11-19 07:57:00,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:00,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 616 [2023-11-19 07:57:00,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:00,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:00,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 616 [2023-11-19 07:57:00,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:07,506 INFO L124 PetriNetUnfolderBase]: 42614/55739 cut-off events. [2023-11-19 07:57:07,506 INFO L125 PetriNetUnfolderBase]: For 648/648 co-relation queries the response was YES. [2023-11-19 07:57:07,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111443 conditions, 55739 events. 42614/55739 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 3572. Compared 307665 event pairs, 38274 based on Foata normal form. 0/24023 useless extension candidates. Maximal degree in co-relation 111401. Up to 54471 conditions per place. [2023-11-19 07:57:07,871 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 51 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-19 07:57:07,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 272 flow [2023-11-19 07:57:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:57:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 987 transitions. [2023-11-19 07:57:07,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2023-11-19 07:57:07,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 987 transitions. [2023-11-19 07:57:07,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 987 transitions. [2023-11-19 07:57:07,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:07,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 987 transitions. [2023-11-19 07:57:07,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:07,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:07,897 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:07,897 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 166 flow. Second operand 4 states and 987 transitions. [2023-11-19 07:57:07,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 272 flow [2023-11-19 07:57:07,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:07,902 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 160 flow [2023-11-19 07:57:07,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-11-19 07:57:07,904 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-11-19 07:57:07,904 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 160 flow [2023-11-19 07:57:07,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:07,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:07,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:57:07,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:08,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:08,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:57:08,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1561556, now seen corresponding path program 1 times [2023-11-19 07:57:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:08,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454059040] [2023-11-19 07:57:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:08,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454059040] [2023-11-19 07:57:08,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454059040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:08,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605688477] [2023-11-19 07:57:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:08,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:08,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:08,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:08,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:08,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:08,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:08,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605688477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:08,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:08,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:57:08,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075796709] [2023-11-19 07:57:08,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:08,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:57:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:57:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:08,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 616 [2023-11-19 07:57:08,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 233.14285714285714) internal successors, (1632), 7 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:08,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:08,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 616 [2023-11-19 07:57:08,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:15,175 INFO L124 PetriNetUnfolderBase]: 42620/55751 cut-off events. [2023-11-19 07:57:15,175 INFO L125 PetriNetUnfolderBase]: For 648/648 co-relation queries the response was YES. [2023-11-19 07:57:15,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111486 conditions, 55751 events. 42620/55751 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 3572. Compared 308008 event pairs, 38274 based on Foata normal form. 0/24036 useless extension candidates. Maximal degree in co-relation 111401. Up to 54480 conditions per place. [2023-11-19 07:57:15,508 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 52 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2023-11-19 07:57:15,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 358 flow [2023-11-19 07:57:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:57:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2023-11-19 07:57:15,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3969155844155844 [2023-11-19 07:57:15,518 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2023-11-19 07:57:15,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2023-11-19 07:57:15,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:15,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2023-11-19 07:57:15,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,537 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,538 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 160 flow. Second operand 6 states and 1467 transitions. [2023-11-19 07:57:15,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 358 flow [2023-11-19 07:57:15,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:15,544 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 276 flow [2023-11-19 07:57:15,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2023-11-19 07:57:15,547 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-11-19 07:57:15,547 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 276 flow [2023-11-19 07:57:15,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 233.14285714285714) internal successors, (1632), 7 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:15,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:15,549 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:57:15,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:15,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:15,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:57:15,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash -722269950, now seen corresponding path program 2 times [2023-11-19 07:57:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913143930] [2023-11-19 07:57:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913143930] [2023-11-19 07:57:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913143930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257548299] [2023-11-19 07:57:15,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:15,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:15,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419f585a-157f-484d-9b81-eda92e78b0ab/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:57:16,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:57:16,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:16,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:16,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:57:16,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257548299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:57:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664534876] [2023-11-19 07:57:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:16,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:16,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 616 [2023-11-19 07:57:16,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:16,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:16,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 616 [2023-11-19 07:57:16,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand