./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/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_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/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_e6b13e36-6e24-448b-b3fc-4057e7aa699d/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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:34,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:34,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:50:34,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:34,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:34,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:34,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:34,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:34,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:34,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:34,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:34,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:34,355 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:34,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:34,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:34,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:34,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:34,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:34,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:34,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:34,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:34,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:34,363 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:50:34,363 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:50:34,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:34,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:34,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:34,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:34,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:34,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:34,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:34,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:34,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:34,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:34,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:34,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:34,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:34,370 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:34,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:34,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:34,371 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:34,371 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_e6b13e36-6e24-448b-b3fc-4057e7aa699d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2023-11-19 07:50:34,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:34,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:34,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:34,722 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:34,723 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:34,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-19 07:50:37,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:38,185 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:38,186 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-19 07:50:38,196 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/data/a64c9e424/639f9bcd832a484b8b53a2164af7ed0e/FLAG60c690803 [2023-11-19 07:50:38,212 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/data/a64c9e424/639f9bcd832a484b8b53a2164af7ed0e [2023-11-19 07:50:38,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:38,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:38,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:38,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:38,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:38,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ec0c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38, skipping insertion in model container [2023-11-19 07:50:38,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:38,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:38,529 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:38,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:38,581 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:38,581 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:50:38,588 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:38,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38 WrapperNode [2023-11-19 07:50:38,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:38,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:38,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:38,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:38,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,699 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 515 [2023-11-19 07:50:38,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:38,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:38,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:38,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:38,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:38,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:38,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:38,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:38,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (1/1) ... [2023-11-19 07:50:38,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:38,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:38,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:38,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:38,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:38,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:50:38,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:50:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:50:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:50:38,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:50:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:50:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:50:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:50:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:50:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:50:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:50:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:50:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:50:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:50:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:38,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:50:38,912 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 07:50:39,120 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:39,124 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:40,070 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:40,603 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:40,603 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-19 07:50:40,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:40 BoogieIcfgContainer [2023-11-19 07:50:40,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:40,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:40,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:40,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:40,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:38" (1/3) ... [2023-11-19 07:50:40,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e43115d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:40, skipping insertion in model container [2023-11-19 07:50:40,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:38" (2/3) ... [2023-11-19 07:50:40,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e43115d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:40, skipping insertion in model container [2023-11-19 07:50:40,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:40" (3/3) ... [2023-11-19 07:50:40,624 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-11-19 07:50:40,634 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:50:40,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:40,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 07:50:40,646 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:50:40,817 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:50:40,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 392 transitions, 812 flow [2023-11-19 07:50:41,006 INFO L124 PetriNetUnfolderBase]: 25/388 cut-off events. [2023-11-19 07:50:41,007 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:50:41,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 388 events. 25/388 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 350 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 340. Up to 2 conditions per place. [2023-11-19 07:50:41,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 392 transitions, 812 flow [2023-11-19 07:50:41,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 362 transitions, 745 flow [2023-11-19 07:50:41,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:41,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 362 transitions, 745 flow [2023-11-19 07:50:41,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 362 transitions, 745 flow [2023-11-19 07:50:41,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 362 transitions, 745 flow [2023-11-19 07:50:41,148 INFO L124 PetriNetUnfolderBase]: 24/362 cut-off events. [2023-11-19 07:50:41,149 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:50:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 362 events. 24/362 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 348 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 340. Up to 2 conditions per place. [2023-11-19 07:50:41,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 6264 [2023-11-19 07:50:58,883 INFO L134 LiptonReduction]: Checked pairs total: 21966 [2023-11-19 07:50:58,883 INFO L136 LiptonReduction]: Total number of compositions: 373 [2023-11-19 07:50:58,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:58,908 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;@14064b70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:58,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-19 07:50:58,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:58,912 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:50:58,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:58,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:58,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:50:58,914 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 07:50:58,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash 64082, now seen corresponding path program 1 times [2023-11-19 07:50:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:58,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801812185] [2023-11-19 07:50:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:59,320 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 07:50:59,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801812185] [2023-11-19 07:50:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801812185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:59,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:59,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:50:59,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558544735] [2023-11-19 07:50:59,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:59,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:59,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:59,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:59,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 765 [2023-11-19 07:50:59,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 07:50:59,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:59,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 765 [2023-11-19 07:50:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:51:07,020 INFO L124 PetriNetUnfolderBase]: 32201/39986 cut-off events. [2023-11-19 07:51:07,020 INFO L125 PetriNetUnfolderBase]: For 832/832 co-relation queries the response was YES. [2023-11-19 07:51:07,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81117 conditions, 39986 events. 32201/39986 cut-off events. For 832/832 co-relation queries the response was YES. Maximal size of possible extension queue 1953. Compared 198661 event pairs, 20543 based on Foata normal form. 0/18373 useless extension candidates. Maximal degree in co-relation 75895. Up to 39655 conditions per place. [2023-11-19 07:51:07,360 INFO L140 encePairwiseOnDemand]: 736/765 looper letters, 58 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2023-11-19 07:51:07,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 297 flow [2023-11-19 07:51:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:51:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:51:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2023-11-19 07:51:07,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44313725490196076 [2023-11-19 07:51:07,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2023-11-19 07:51:07,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2023-11-19 07:51:07,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:51:07,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2023-11-19 07:51:07,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states 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 07:51:07,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 07:51:07,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 07:51:07,422 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 171 flow. Second operand 3 states and 1017 transitions. [2023-11-19 07:51:07,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 297 flow [2023-11-19 07:51:07,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 284 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:51:07,496 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 218 flow [2023-11-19 07:51:07,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2023-11-19 07:51:07,505 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -15 predicate places. [2023-11-19 07:51:07,505 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 218 flow [2023-11-19 07:51:07,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 07:51:07,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:51:07,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:51:07,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:51:07,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:51:07,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1990005, now seen corresponding path program 1 times [2023-11-19 07:51:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231983520] [2023-11-19 07:51:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:07,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,726 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 07:51:07,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:07,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231983520] [2023-11-19 07:51:07,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231983520] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:51:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841780328] [2023-11-19 07:51:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:07,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:07,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:07,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:51:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:07,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:51:07,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:07,953 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 07:51:07,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:51:07,986 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 07:51:07,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841780328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:51:07,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:51:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:51:07,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119187967] [2023-11-19 07:51:07,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:51:07,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:51:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:51:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:51:08,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 765 [2023-11-19 07:51:08,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states 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 07:51:08,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:51:08,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 765 [2023-11-19 07:51:08,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:51:14,585 INFO L124 PetriNetUnfolderBase]: 32225/40022 cut-off events. [2023-11-19 07:51:14,589 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-19 07:51:14,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80909 conditions, 40022 events. 32225/40022 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1953. Compared 198871 event pairs, 20543 based on Foata normal form. 0/18400 useless extension candidates. Maximal degree in co-relation 80704. Up to 39654 conditions per place. [2023-11-19 07:51:14,868 INFO L140 encePairwiseOnDemand]: 748/765 looper letters, 54 selfloop transitions, 49 changer transitions 0/107 dead transitions. [2023-11-19 07:51:14,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 586 flow [2023-11-19 07:51:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:51:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:51:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2285 transitions. [2023-11-19 07:51:14,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42670401493930904 [2023-11-19 07:51:14,885 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2285 transitions. [2023-11-19 07:51:14,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2285 transitions. [2023-11-19 07:51:14,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:51:14,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2285 transitions. [2023-11-19 07:51:14,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states 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 07:51:14,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 765.0) internal successors, (6120), 8 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states 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 07:51:14,913 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 765.0) internal successors, (6120), 8 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states 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 07:51:14,913 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 218 flow. Second operand 7 states and 2285 transitions. [2023-11-19 07:51:14,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 586 flow [2023-11-19 07:51:14,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:51:14,921 INFO L231 Difference]: Finished difference. Result has 72 places, 107 transitions, 524 flow [2023-11-19 07:51:14,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=72, PETRI_TRANSITIONS=107} [2023-11-19 07:51:14,922 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -8 predicate places. [2023-11-19 07:51:14,922 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 107 transitions, 524 flow [2023-11-19 07:51:14,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states 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 07:51:14,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:51:14,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:51:14,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:51:15,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:51:15,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:51:15,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 61692082, now seen corresponding path program 1 times [2023-11-19 07:51:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282826887] [2023-11-19 07:51:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:15,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:15,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:15,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282826887] [2023-11-19 07:51:15,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282826887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:51:15,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678187724] [2023-11-19 07:51:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:15,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:15,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:15,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:15,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:51:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:15,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:51:15,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:51:15,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:15,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678187724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:15,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:51:15,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:51:15,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392113391] [2023-11-19 07:51:15,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:15,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:51:15,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:51:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:51:15,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 765 [2023-11-19 07:51:15,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 107 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 07:51:15,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:51:15,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 765 [2023-11-19 07:51:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:51:21,489 INFO L124 PetriNetUnfolderBase]: 32213/40006 cut-off events. [2023-11-19 07:51:21,489 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-11-19 07:51:21,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80920 conditions, 40006 events. 32213/40006 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 1892. Compared 197920 event pairs, 20543 based on Foata normal form. 0/18401 useless extension candidates. Maximal degree in co-relation 80797. Up to 39642 conditions per place. [2023-11-19 07:51:21,777 INFO L140 encePairwiseOnDemand]: 752/765 looper letters, 61 selfloop transitions, 26 changer transitions 0/91 dead transitions. [2023-11-19 07:51:21,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 590 flow [2023-11-19 07:51:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:51:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:51:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1629 transitions. [2023-11-19 07:51:21,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258823529411765 [2023-11-19 07:51:21,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1629 transitions. [2023-11-19 07:51:21,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1629 transitions. [2023-11-19 07:51:21,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:51:21,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1629 transitions. [2023-11-19 07:51:21,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.8) internal successors, (1629), 5 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 07:51:21,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 07:51:21,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 07:51:21,809 INFO L175 Difference]: Start difference. First operand has 72 places, 107 transitions, 524 flow. Second operand 5 states and 1629 transitions. [2023-11-19 07:51:21,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 590 flow [2023-11-19 07:51:21,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 91 transitions, 542 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-19 07:51:21,815 INFO L231 Difference]: Finished difference. Result has 70 places, 91 transitions, 420 flow [2023-11-19 07:51:21,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=70, PETRI_TRANSITIONS=91} [2023-11-19 07:51:21,818 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -10 predicate places. [2023-11-19 07:51:21,818 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 91 transitions, 420 flow [2023-11-19 07:51:21,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 07:51:21,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:51:21,820 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:51:21,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:51:22,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:22,033 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 07:51:22,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:51:22,034 INFO L85 PathProgramCache]: Analyzing trace with hash -843342014, now seen corresponding path program 2 times [2023-11-19 07:51:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:51:22,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654125171] [2023-11-19 07:51:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:51:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:51:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:51:22,203 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 07:51:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:51:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654125171] [2023-11-19 07:51:22,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654125171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:51:22,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464189950] [2023-11-19 07:51:22,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:51:22,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:51:22,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:51:22,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:51:22,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6b13e36-6e24-448b-b3fc-4057e7aa699d/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:51:22,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:51:22,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:51:22,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:51:22,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:51:22,379 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 07:51:22,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:51:22,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464189950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:51:22,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:51:22,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:51:22,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520179277] [2023-11-19 07:51:22,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:51:22,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:51:22,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:51:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:51:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:51:22,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 765 [2023-11-19 07:51:22,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 91 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states 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 07:51:22,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:51:22,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 765 [2023-11-19 07:51:22,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand