./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:28,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:28,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:24:28,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:28,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:28,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:28,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:28,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:28,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:28,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:28,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:28,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:28,514 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:28,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:28,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:28,516 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:28,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:28,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:28,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:28,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:28,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:28,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:28,519 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:24:28,520 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:28,520 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:28,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:28,521 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:28,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:28,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:28,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:28,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:28,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:28,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:28,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:28,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:28,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:28,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:28,525 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:28,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:28,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:28,525 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:28,526 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_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2023-11-12 02:24:28,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:28,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:28,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:28,846 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:28,846 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:28,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-12 02:24:32,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:32,367 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:32,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-12 02:24:32,389 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/data/fda34c03a/923245b73bbf4045ab87d8e318e3eefb/FLAG0b1407765 [2023-11-12 02:24:32,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/data/fda34c03a/923245b73bbf4045ab87d8e318e3eefb [2023-11-12 02:24:32,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:32,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:32,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:32,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:32,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:32,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:32,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c1c9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32, skipping insertion in model container [2023-11-12 02:24:32,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:32,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:32,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:32,837 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:32,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:32,974 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:32,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32 WrapperNode [2023-11-12 02:24:32,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:32,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:32,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:32,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:32,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,060 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-12 02:24:33,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:33,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:33,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:33,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:33,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:33,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:33,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:33,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:33,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (1/1) ... [2023-11-12 02:24:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:33,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:33,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:24:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:24:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:24:33,192 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:24:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:33,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:33,195 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:24:33,346 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:33,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:33,566 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:33,575 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:33,575 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-12 02:24:33,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:33 BoogieIcfgContainer [2023-11-12 02:24:33,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:33,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:33,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:33,585 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:33,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:32" (1/3) ... [2023-11-12 02:24:33,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c3f46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:33, skipping insertion in model container [2023-11-12 02:24:33,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:32" (2/3) ... [2023-11-12 02:24:33,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c3f46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:33, skipping insertion in model container [2023-11-12 02:24:33,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:33" (3/3) ... [2023-11-12 02:24:33,589 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-11-12 02:24:33,598 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:24:33,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:33,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:24:33,611 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:33,692 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:24:33,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 116 transitions, 236 flow [2023-11-12 02:24:33,847 INFO L124 PetriNetUnfolderBase]: 16/152 cut-off events. [2023-11-12 02:24:33,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 152 events. 16/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 372 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-11-12 02:24:33,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 116 transitions, 236 flow [2023-11-12 02:24:33,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 116 transitions, 236 flow [2023-11-12 02:24:33,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:33,891 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 116 transitions, 236 flow [2023-11-12 02:24:33,895 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 116 transitions, 236 flow [2023-11-12 02:24:33,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 116 transitions, 236 flow [2023-11-12 02:24:33,942 INFO L124 PetriNetUnfolderBase]: 16/152 cut-off events. [2023-11-12 02:24:33,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:33,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 152 events. 16/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 372 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-11-12 02:24:33,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 3680 [2023-11-12 02:24:37,949 INFO L134 LiptonReduction]: Checked pairs total: 6182 [2023-11-12 02:24:37,949 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-11-12 02:24:37,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:37,975 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;@2d0d9518, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:37,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-12 02:24:37,979 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:37,980 INFO L124 PetriNetUnfolderBase]: 3/11 cut-off events. [2023-11-12 02:24:37,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:37,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:37,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:24:37,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-12 02:24:37,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash 14188918, now seen corresponding path program 1 times [2023-11-12 02:24:37,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:37,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363331455] [2023-11-12 02:24:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:37,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363331455] [2023-11-12 02:24:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363331455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:38,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:38,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:38,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371565161] [2023-11-12 02:24:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:38,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:38,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-11-12 02:24:38,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 35 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:38,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-11-12 02:24:38,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:38,550 INFO L124 PetriNetUnfolderBase]: 78/188 cut-off events. [2023-11-12 02:24:38,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 188 events. 78/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 639 event pairs, 60 based on Foata normal form. 14/160 useless extension candidates. Maximal degree in co-relation 358. Up to 163 conditions per place. [2023-11-12 02:24:38,555 INFO L140 encePairwiseOnDemand]: 215/229 looper letters, 33 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-11-12 02:24:38,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 150 flow [2023-11-12 02:24:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:38,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-11-12 02:24:38,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007278020378457 [2023-11-12 02:24:38,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-11-12 02:24:38,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-11-12 02:24:38,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:38,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-11-12 02:24:38,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,605 INFO L175 Difference]: Start difference. First operand has 29 places, 35 transitions, 74 flow. Second operand 3 states and 344 transitions. [2023-11-12 02:24:38,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 150 flow [2023-11-12 02:24:38,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:38,611 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 60 flow [2023-11-12 02:24:38,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-11-12 02:24:38,619 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-12 02:24:38,620 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 60 flow [2023-11-12 02:24:38,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:38,621 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:24:38,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:38,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-12 02:24:38,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 750683163, now seen corresponding path program 1 times [2023-11-12 02:24:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:38,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867719778] [2023-11-12 02:24:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:38,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:38,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:24:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:38,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:24:38,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:24:38,750 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-12 02:24:38,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-12 02:24:38,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-12 02:24:38,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-12 02:24:38,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-12 02:24:38,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-12 02:24:38,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-12 02:24:38,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-12 02:24:38,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-12 02:24:38,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-12 02:24:38,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-12 02:24:38,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:38,757 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 02:24:38,761 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:24:38,761 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:24:38,802 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:24:38,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 157 transitions, 324 flow [2023-11-12 02:24:38,865 INFO L124 PetriNetUnfolderBase]: 27/238 cut-off events. [2023-11-12 02:24:38,866 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:24:38,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 238 events. 27/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 712 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 153. Up to 6 conditions per place. [2023-11-12 02:24:38,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 157 transitions, 324 flow [2023-11-12 02:24:38,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 157 transitions, 324 flow [2023-11-12 02:24:38,873 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:38,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 157 transitions, 324 flow [2023-11-12 02:24:38,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 157 transitions, 324 flow [2023-11-12 02:24:38,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 157 transitions, 324 flow [2023-11-12 02:24:38,907 INFO L124 PetriNetUnfolderBase]: 27/238 cut-off events. [2023-11-12 02:24:38,907 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:24:38,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 238 events. 27/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 712 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 153. Up to 6 conditions per place. [2023-11-12 02:24:38,920 INFO L119 LiptonReduction]: Number of co-enabled transitions 10640 [2023-11-12 02:24:42,959 INFO L134 LiptonReduction]: Checked pairs total: 21469 [2023-11-12 02:24:42,960 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-11-12 02:24:42,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:42,964 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;@2d0d9518, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:42,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-12 02:24:42,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:42,967 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2023-11-12 02:24:42,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:42,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:42,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:24:42,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-12 02:24:42,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:42,969 INFO L85 PathProgramCache]: Analyzing trace with hash 767859251, now seen corresponding path program 1 times [2023-11-12 02:24:42,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:42,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268951129] [2023-11-12 02:24:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:42,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:43,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:43,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268951129] [2023-11-12 02:24:43,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268951129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:43,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:43,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054367499] [2023-11-12 02:24:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:43,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:43,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 302 [2023-11-12 02:24:43,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 58 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:43,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:43,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 302 [2023-11-12 02:24:43,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:43,830 INFO L124 PetriNetUnfolderBase]: 3148/5078 cut-off events. [2023-11-12 02:24:43,831 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-12 02:24:43,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10119 conditions, 5078 events. 3148/5078 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32673 event pairs, 2996 based on Foata normal form. 543/3981 useless extension candidates. Maximal degree in co-relation 6623. Up to 4982 conditions per place. [2023-11-12 02:24:43,872 INFO L140 encePairwiseOnDemand]: 282/302 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-12 02:24:43,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 226 flow [2023-11-12 02:24:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-11-12 02:24:43,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165562913907285 [2023-11-12 02:24:43,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-11-12 02:24:43,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-11-12 02:24:43,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:43,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-11-12 02:24:43,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:43,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:43,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:43,885 INFO L175 Difference]: Start difference. First operand has 48 places, 58 transitions, 126 flow. Second operand 3 states and 468 transitions. [2023-11-12 02:24:43,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 226 flow [2023-11-12 02:24:43,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:43,889 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 112 flow [2023-11-12 02:24:43,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-12 02:24:43,890 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-11-12 02:24:43,891 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 112 flow [2023-11-12 02:24:43,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:43,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:43,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:43,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:24:43,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-12 02:24:43,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash -814687901, now seen corresponding path program 1 times [2023-11-12 02:24:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825737496] [2023-11-12 02:24:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825737496] [2023-11-12 02:24:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825737496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438532734] [2023-11-12 02:24:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:44,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:44,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:24:44,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 302 [2023-11-12 02:24:44,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:44,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 302 [2023-11-12 02:24:44,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:44,781 INFO L124 PetriNetUnfolderBase]: 2828/4572 cut-off events. [2023-11-12 02:24:44,782 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2023-11-12 02:24:44,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9855 conditions, 4572 events. 2828/4572 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 28658 event pairs, 1097 based on Foata normal form. 0/3388 useless extension candidates. Maximal degree in co-relation 9772. Up to 4214 conditions per place. [2023-11-12 02:24:44,820 INFO L140 encePairwiseOnDemand]: 294/302 looper letters, 56 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-11-12 02:24:44,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 300 flow [2023-11-12 02:24:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:24:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:24:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-11-12 02:24:44,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768211920529801 [2023-11-12 02:24:44,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-11-12 02:24:44,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-11-12 02:24:44,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:44,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-11-12 02:24:44,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,876 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 112 flow. Second operand 4 states and 576 transitions. [2023-11-12 02:24:44,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 300 flow [2023-11-12 02:24:44,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:44,879 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 161 flow [2023-11-12 02:24:44,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-11-12 02:24:44,883 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-11-12 02:24:44,883 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 161 flow [2023-11-12 02:24:44,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:44,884 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:24:44,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:24:44,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-12 02:24:44,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash 750866126, now seen corresponding path program 1 times [2023-11-12 02:24:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551652006] [2023-11-12 02:24:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:44,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:24:44,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:44,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551652006] [2023-11-12 02:24:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551652006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:44,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:44,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:44,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483530340] [2023-11-12 02:24:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:44,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:44,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 302 [2023-11-12 02:24:44,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:44,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 302 [2023-11-12 02:24:44,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:45,556 INFO L124 PetriNetUnfolderBase]: 2502/4031 cut-off events. [2023-11-12 02:24:45,556 INFO L125 PetriNetUnfolderBase]: For 776/776 co-relation queries the response was YES. [2023-11-12 02:24:45,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9635 conditions, 4031 events. 2502/4031 cut-off events. For 776/776 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25854 event pairs, 811 based on Foata normal form. 0/3251 useless extension candidates. Maximal degree in co-relation 7206. Up to 2621 conditions per place. [2023-11-12 02:24:45,591 INFO L140 encePairwiseOnDemand]: 298/302 looper letters, 67 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-11-12 02:24:45,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 383 flow [2023-11-12 02:24:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-11-12 02:24:45,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011037527593819 [2023-11-12 02:24:45,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-11-12 02:24:45,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-11-12 02:24:45,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:45,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-11-12 02:24:45,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:45,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:45,601 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:45,601 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 161 flow. Second operand 3 states and 454 transitions. [2023-11-12 02:24:45,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 383 flow [2023-11-12 02:24:45,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 383 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:45,607 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 173 flow [2023-11-12 02:24:45,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-11-12 02:24:45,608 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-11-12 02:24:45,609 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 173 flow [2023-11-12 02:24:45,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:45,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:45,610 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:24:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:24:45,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-12 02:24:45,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 750866097, now seen corresponding path program 1 times [2023-11-12 02:24:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:45,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192194957] [2023-11-12 02:24:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:45,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:45,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:45,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192194957] [2023-11-12 02:24:45,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192194957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:45,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177171601] [2023-11-12 02:24:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:45,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:45,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:45,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:45,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:24:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:45,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:24:45,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:45,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177171601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-12 02:24:45,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658127637] [2023-11-12 02:24:45,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:45,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 302 [2023-11-12 02:24:45,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:45,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:45,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 302 [2023-11-12 02:24:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:46,455 INFO L124 PetriNetUnfolderBase]: 2176/3553 cut-off events. [2023-11-12 02:24:46,455 INFO L125 PetriNetUnfolderBase]: For 2088/2088 co-relation queries the response was YES. [2023-11-12 02:24:46,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8946 conditions, 3553 events. 2176/3553 cut-off events. For 2088/2088 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22923 event pairs, 396 based on Foata normal form. 177/3204 useless extension candidates. Maximal degree in co-relation 6712. Up to 2097 conditions per place. [2023-11-12 02:24:46,532 INFO L140 encePairwiseOnDemand]: 298/302 looper letters, 77 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-11-12 02:24:46,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 434 flow [2023-11-12 02:24:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:24:46,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:24:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions. [2023-11-12 02:24:46,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49503311258278143 [2023-11-12 02:24:46,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions. [2023-11-12 02:24:46,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions. [2023-11-12 02:24:46,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:46,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions. [2023-11-12 02:24:46,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:46,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:46,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:46,544 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 173 flow. Second operand 4 states and 598 transitions. [2023-11-12 02:24:46,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 434 flow [2023-11-12 02:24:46,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 86 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:46,554 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 171 flow [2023-11-12 02:24:46,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-12 02:24:46,558 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2023-11-12 02:24:46,558 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 171 flow [2023-11-12 02:24:46,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:46,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:46,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:46,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:24:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb55526-18d8-4a52-a80a-c4f20762e878/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:24:46,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-12 02:24:46,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1876607313, now seen corresponding path program 1 times [2023-11-12 02:24:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572475452] [2023-11-12 02:24:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:47,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572475452] [2023-11-12 02:24:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572475452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:47,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:47,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:24:47,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540353275] [2023-11-12 02:24:47,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:47,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:24:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:24:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:47,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 302 [2023-11-12 02:24:47,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:47,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:47,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 302 [2023-11-12 02:24:47,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:47,981 INFO L124 PetriNetUnfolderBase]: 3053/5119 cut-off events. [2023-11-12 02:24:47,985 INFO L125 PetriNetUnfolderBase]: For 2721/2721 co-relation queries the response was YES. [2023-11-12 02:24:47,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12601 conditions, 5119 events. 3053/5119 cut-off events. For 2721/2721 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 32834 event pairs, 530 based on Foata normal form. 0/4463 useless extension candidates. Maximal degree in co-relation 10194. Up to 2841 conditions per place. [2023-11-12 02:24:48,022 INFO L140 encePairwiseOnDemand]: 285/302 looper letters, 120 selfloop transitions, 30 changer transitions 0/156 dead transitions. [2023-11-12 02:24:48,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 834 flow [2023-11-12 02:24:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:24:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:24:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1257 transitions. [2023-11-12 02:24:48,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624724061810154 [2023-11-12 02:24:48,029 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1257 transitions. [2023-11-12 02:24:48,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1257 transitions. [2023-11-12 02:24:48,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:48,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1257 transitions. [2023-11-12 02:24:48,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.66666666666666) internal successors, (1257), 9 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:48,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:48,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:48,045 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 171 flow. Second operand 9 states and 1257 transitions. [2023-11-12 02:24:48,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 834 flow [2023-11-12 02:24:48,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 156 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:48,053 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 398 flow [2023-11-12 02:24:48,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=398, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-11-12 02:24:48,056 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2023-11-12 02:24:48,056 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 398 flow [2023-11-12 02:24:48,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:48,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:48,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:48,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:24:48,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-12 02:24:48,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1876607286, now seen corresponding path program 1 times [2023-11-12 02:24:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:48,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363340227] [2023-11-12 02:24:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:48,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:48,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:48,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363340227] [2023-11-12 02:24:48,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363340227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:48,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:48,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:24:48,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908300741] [2023-11-12 02:24:48,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:48,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:48,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:48,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:24:48,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 302 [2023-11-12 02:24:48,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:48,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:48,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 302 [2023-11-12 02:24:48,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:49,098 INFO L124 PetriNetUnfolderBase]: 3196/5586 cut-off events. [2023-11-12 02:24:49,099 INFO L125 PetriNetUnfolderBase]: For 8053/8053 co-relation queries the response was YES. [2023-11-12 02:24:49,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16937 conditions, 5586 events. 3196/5586 cut-off events. For 8053/8053 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 37870 event pairs, 765 based on Foata normal form. 289/5865 useless extension candidates. Maximal degree in co-relation 12934. Up to 2423 conditions per place. [2023-11-12 02:24:49,136 INFO L140 encePairwiseOnDemand]: 288/302 looper letters, 111 selfloop transitions, 44 changer transitions 0/161 dead transitions. [2023-11-12 02:24:49,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 161 transitions, 1162 flow [2023-11-12 02:24:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:24:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:24:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 739 transitions. [2023-11-12 02:24:49,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48940397350993375 [2023-11-12 02:24:49,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 739 transitions. [2023-11-12 02:24:49,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 739 transitions. [2023-11-12 02:24:49,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:49,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 739 transitions. [2023-11-12 02:24:49,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,150 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,151 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 398 flow. Second operand 5 states and 739 transitions. [2023-11-12 02:24:49,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 161 transitions, 1162 flow [2023-11-12 02:24:49,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 161 transitions, 1139 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:49,188 INFO L231 Difference]: Finished difference. Result has 74 places, 102 transitions, 831 flow [2023-11-12 02:24:49,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=831, PETRI_PLACES=74, PETRI_TRANSITIONS=102} [2023-11-12 02:24:49,190 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2023-11-12 02:24:49,190 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 102 transitions, 831 flow [2023-11-12 02:24:49,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:49,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:49,191 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:24:49,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:24:49,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-12 02:24:49,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash 27884054, now seen corresponding path program 1 times [2023-11-12 02:24:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:49,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084792096] [2023-11-12 02:24:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:49,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:49,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:24:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:49,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:24:49,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:24:49,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-12 02:24:49,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-11-12 02:24:49,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-11-12 02:24:49,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-11-12 02:24:49,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-11-12 02:24:49,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-11-12 02:24:49,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-11-12 02:24:49,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-11-12 02:24:49,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-11-12 02:24:49,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-11-12 02:24:49,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-11-12 02:24:49,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-11-12 02:24:49,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-11-12 02:24:49,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-11-12 02:24:49,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-11-12 02:24:49,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:24:49,249 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:49,251 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:24:49,251 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:24:49,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:24:49,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 198 transitions, 414 flow [2023-11-12 02:24:49,333 INFO L124 PetriNetUnfolderBase]: 38/324 cut-off events. [2023-11-12 02:24:49,333 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:24:49,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 324 events. 38/324 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1047 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-12 02:24:49,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 198 transitions, 414 flow [2023-11-12 02:24:49,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 198 transitions, 414 flow [2023-11-12 02:24:49,339 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:49,339 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 198 transitions, 414 flow [2023-11-12 02:24:49,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 198 transitions, 414 flow [2023-11-12 02:24:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 198 transitions, 414 flow [2023-11-12 02:24:49,380 INFO L124 PetriNetUnfolderBase]: 38/324 cut-off events. [2023-11-12 02:24:49,380 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:24:49,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 324 events. 38/324 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1047 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-12 02:24:49,401 INFO L119 LiptonReduction]: Number of co-enabled transitions 20880 [2023-11-12 02:24:53,722 INFO L134 LiptonReduction]: Checked pairs total: 45847 [2023-11-12 02:24:53,722 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-11-12 02:24:53,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:53,726 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;@2d0d9518, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:53,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-12 02:24:53,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:53,730 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2023-11-12 02:24:53,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:53,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:53,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:24:53,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:24:53,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1161807249, now seen corresponding path program 1 times [2023-11-12 02:24:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795795840] [2023-11-12 02:24:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:53,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795795840] [2023-11-12 02:24:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795795840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:53,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:53,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:53,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964108399] [2023-11-12 02:24:53,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:53,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:53,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:53,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:53,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:53,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 372 [2023-11-12 02:24:53,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 80 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:53,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:53,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 372 [2023-11-12 02:24:53,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:02,876 INFO L124 PetriNetUnfolderBase]: 69040/96683 cut-off events. [2023-11-12 02:25:02,876 INFO L125 PetriNetUnfolderBase]: For 1238/1238 co-relation queries the response was YES. [2023-11-12 02:25:02,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192967 conditions, 96683 events. 69040/96683 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 3609. Compared 709063 event pairs, 66998 based on Foata normal form. 11271/76750 useless extension candidates. Maximal degree in co-relation 95126. Up to 95444 conditions per place. [2023-11-12 02:25:03,419 INFO L140 encePairwiseOnDemand]: 346/372 looper letters, 63 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-12 02:25:03,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 294 flow [2023-11-12 02:25:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-11-12 02:25:03,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286738351254481 [2023-11-12 02:25:03,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-11-12 02:25:03,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-11-12 02:25:03,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:03,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-11-12 02:25:03,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,430 INFO L175 Difference]: Start difference. First operand has 66 places, 80 transitions, 178 flow. Second operand 3 states and 590 transitions. [2023-11-12 02:25:03,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 294 flow [2023-11-12 02:25:03,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 292 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:03,434 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 150 flow [2023-11-12 02:25:03,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-11-12 02:25:03,436 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-11-12 02:25:03,436 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 150 flow [2023-11-12 02:25:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:03,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:03,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:25:03,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:03,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -185902189, now seen corresponding path program 1 times [2023-11-12 02:25:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:03,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271192751] [2023-11-12 02:25:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271192751] [2023-11-12 02:25:03,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271192751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:03,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:03,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200380676] [2023-11-12 02:25:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:03,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:03,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 372 [2023-11-12 02:25:03,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:03,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:03,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 372 [2023-11-12 02:25:03,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:11,741 INFO L124 PetriNetUnfolderBase]: 65738/91393 cut-off events. [2023-11-12 02:25:11,741 INFO L125 PetriNetUnfolderBase]: For 6178/6178 co-relation queries the response was YES. [2023-11-12 02:25:11,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194126 conditions, 91393 events. 65738/91393 cut-off events. For 6178/6178 co-relation queries the response was YES. Maximal size of possible extension queue 3686. Compared 662290 event pairs, 32321 based on Foata normal form. 0/65281 useless extension candidates. Maximal degree in co-relation 194042. Up to 89693 conditions per place. [2023-11-12 02:25:12,218 INFO L140 encePairwiseOnDemand]: 361/372 looper letters, 75 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2023-11-12 02:25:12,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 399 flow [2023-11-12 02:25:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 729 transitions. [2023-11-12 02:25:12,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899193548387097 [2023-11-12 02:25:12,223 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 729 transitions. [2023-11-12 02:25:12,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 729 transitions. [2023-11-12 02:25:12,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:12,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 729 transitions. [2023-11-12 02:25:12,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.25) internal successors, (729), 4 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,230 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,230 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 150 flow. Second operand 4 states and 729 transitions. [2023-11-12 02:25:12,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 399 flow [2023-11-12 02:25:12,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:12,245 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 219 flow [2023-11-12 02:25:12,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-11-12 02:25:12,247 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2023-11-12 02:25:12,247 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 219 flow [2023-11-12 02:25:12,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:12,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:25:12,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:25:12,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:25:12,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1931986522, now seen corresponding path program 1 times [2023-11-12 02:25:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:12,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663712794] [2023-11-12 02:25:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:12,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663712794] [2023-11-12 02:25:12,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663712794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:12,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511188817] [2023-11-12 02:25:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:12,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:12,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:12,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 372 [2023-11-12 02:25:12,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:12,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:12,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 372 [2023-11-12 02:25:12,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:20,147 INFO L124 PetriNetUnfolderBase]: 58151/80915 cut-off events. [2023-11-12 02:25:20,147 INFO L125 PetriNetUnfolderBase]: For 21815/22353 co-relation queries the response was YES.