./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:19,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:19,610 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:00:19,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:19,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:19,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:19,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:19,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:19,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:19,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:19,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:19,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:19,647 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:19,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:19,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:19,649 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:19,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:19,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:19,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:19,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:19,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:19,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:19,653 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:00:19,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:19,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:19,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:19,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:19,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:19,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:19,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:19,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:19,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:19,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:19,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:19,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:19,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:19,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:19,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:19,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:19,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:19,660 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:19,661 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_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2023-11-19 08:00:20,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:20,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:20,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:20,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:20,040 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:20,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-19 08:00:23,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:23,640 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:23,654 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-19 08:00:23,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/data/7e9eee883/b8fb862f1c1a446eb2153b75335eb552/FLAG32701fee2 [2023-11-19 08:00:23,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/data/7e9eee883/b8fb862f1c1a446eb2153b75335eb552 [2023-11-19 08:00:23,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:23,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:23,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:23,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:23,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:23,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:23" (1/1) ... [2023-11-19 08:00:23,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69df9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23, skipping insertion in model container [2023-11-19 08:00:23,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:23" (1/1) ... [2023-11-19 08:00:23,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:24,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:24,191 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:24,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:24,309 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:24,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24 WrapperNode [2023-11-19 08:00:24,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:24,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:24,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:24,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:24,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,382 INFO L138 Inliner]: procedures = 167, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-11-19 08:00:24,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:24,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:24,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:24,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:24,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:24,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:24,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:24,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:24,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (1/1) ... [2023-11-19 08:00:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:24,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:24,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:24,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:24,516 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 08:00:24,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 08:00:24,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:24,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:24,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:24,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:24,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:24,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:24,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:24,519 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:00:24,722 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:24,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:25,020 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:25,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:25,035 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:00:25,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:25 BoogieIcfgContainer [2023-11-19 08:00:25,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:25,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:25,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:25,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:25,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:23" (1/3) ... [2023-11-19 08:00:25,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d2b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:25, skipping insertion in model container [2023-11-19 08:00:25,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:24" (2/3) ... [2023-11-19 08:00:25,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d2b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:25, skipping insertion in model container [2023-11-19 08:00:25,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:25" (3/3) ... [2023-11-19 08:00:25,054 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-11-19 08:00:25,064 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:00:25,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:25,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 08:00:25,078 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:25,211 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:25,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 178 flow [2023-11-19 08:00:25,339 INFO L124 PetriNetUnfolderBase]: 11/98 cut-off events. [2023-11-19 08:00:25,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:25,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-11-19 08:00:25,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 178 flow [2023-11-19 08:00:25,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 87 transitions, 178 flow [2023-11-19 08:00:25,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:25,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 87 transitions, 178 flow [2023-11-19 08:00:25,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 87 transitions, 178 flow [2023-11-19 08:00:25,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 178 flow [2023-11-19 08:00:25,438 INFO L124 PetriNetUnfolderBase]: 11/98 cut-off events. [2023-11-19 08:00:25,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:25,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 98 events. 11/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-11-19 08:00:25,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 1764 [2023-11-19 08:00:28,303 INFO L134 LiptonReduction]: Checked pairs total: 1528 [2023-11-19 08:00:28,303 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-11-19 08:00:28,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:28,325 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;@75a6c758, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:28,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 08:00:28,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:28,330 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 08:00:28,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:28,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:28,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:28,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:00:28,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash 377647332, now seen corresponding path program 1 times [2023-11-19 08:00:28,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:28,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122786707] [2023-11-19 08:00:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:28,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:28,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:28,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122786707] [2023-11-19 08:00:28,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122786707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:28,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:28,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583176787] [2023-11-19 08:00:28,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:28,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:28,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:28,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-11-19 08:00:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:28,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-11-19 08:00:28,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:28,810 INFO L124 PetriNetUnfolderBase]: 53/117 cut-off events. [2023-11-19 08:00:28,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:28,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 117 events. 53/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 384 event pairs, 24 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 224. Up to 75 conditions per place. [2023-11-19 08:00:28,813 INFO L140 encePairwiseOnDemand]: 165/174 looper letters, 28 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-19 08:00:28,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 31 transitions, 126 flow [2023-11-19 08:00:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-19 08:00:28,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2023-11-19 08:00:28,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-19 08:00:28,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-19 08:00:28,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:28,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-19 08:00:28,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,848 INFO L175 Difference]: Start difference. First operand has 21 places, 22 transitions, 48 flow. Second operand 3 states and 258 transitions. [2023-11-19 08:00:28,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 31 transitions, 126 flow [2023-11-19 08:00:28,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:28,853 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 64 flow [2023-11-19 08:00:28,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-11-19 08:00:28,859 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-11-19 08:00:28,859 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 64 flow [2023-11-19 08:00:28,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:28,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:00:28,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:28,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:00:28,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1177884657, now seen corresponding path program 1 times [2023-11-19 08:00:28,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:28,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446962475] [2023-11-19 08:00:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:28,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:28,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:28,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:28,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:28,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 08:00:28,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-19 08:00:28,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-19 08:00:28,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-19 08:00:28,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-19 08:00:28,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-19 08:00:28,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-19 08:00:28,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-19 08:00:28,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-19 08:00:28,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-19 08:00:28,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-19 08:00:28,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-19 08:00:28,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-19 08:00:28,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-19 08:00:28,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-19 08:00:28,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-19 08:00:28,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-19 08:00:28,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:28,922 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:00:28,925 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:00:28,925 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:00:28,963 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:28,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 151 transitions, 312 flow [2023-11-19 08:00:29,001 INFO L124 PetriNetUnfolderBase]: 21/175 cut-off events. [2023-11-19 08:00:29,002 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:00:29,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 175 events. 21/175 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 453 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-11-19 08:00:29,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 151 transitions, 312 flow [2023-11-19 08:00:29,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 151 transitions, 312 flow [2023-11-19 08:00:29,009 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:29,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 151 transitions, 312 flow [2023-11-19 08:00:29,010 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 151 transitions, 312 flow [2023-11-19 08:00:29,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 151 transitions, 312 flow [2023-11-19 08:00:29,040 INFO L124 PetriNetUnfolderBase]: 21/175 cut-off events. [2023-11-19 08:00:29,041 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:00:29,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 175 events. 21/175 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 453 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-11-19 08:00:29,053 INFO L119 LiptonReduction]: Number of co-enabled transitions 11592 [2023-11-19 08:00:33,133 INFO L134 LiptonReduction]: Checked pairs total: 9639 [2023-11-19 08:00:33,133 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-11-19 08:00:33,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:33,138 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;@75a6c758, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:33,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 08:00:33,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:33,140 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-19 08:00:33,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:33,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:33,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:33,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:33,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash 724924130, now seen corresponding path program 1 times [2023-11-19 08:00:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:33,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647185297] [2023-11-19 08:00:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:33,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:33,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:33,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647185297] [2023-11-19 08:00:33,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647185297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:33,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:33,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:33,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044392479] [2023-11-19 08:00:33,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:33,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:33,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:33,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:33,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:33,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 306 [2023-11-19 08:00:33,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:33,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 306 [2023-11-19 08:00:33,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:33,608 INFO L124 PetriNetUnfolderBase]: 1013/1583 cut-off events. [2023-11-19 08:00:33,608 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-19 08:00:33,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3224 conditions, 1583 events. 1013/1583 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9183 event pairs, 480 based on Foata normal form. 0/661 useless extension candidates. Maximal degree in co-relation 1762. Up to 1009 conditions per place. [2023-11-19 08:00:33,625 INFO L140 encePairwiseOnDemand]: 296/306 looper letters, 58 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-19 08:00:33,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 63 transitions, 261 flow [2023-11-19 08:00:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-11-19 08:00:33,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021786492374728 [2023-11-19 08:00:33,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-11-19 08:00:33,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-11-19 08:00:33,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:33,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-11-19 08:00:33,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,639 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 90 flow. Second operand 3 states and 461 transitions. [2023-11-19 08:00:33,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 63 transitions, 261 flow [2023-11-19 08:00:33,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 261 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:33,642 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 104 flow [2023-11-19 08:00:33,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-11-19 08:00:33,643 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-11-19 08:00:33,644 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 104 flow [2023-11-19 08:00:33,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:33,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:33,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:33,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:33,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash 867452131, now seen corresponding path program 1 times [2023-11-19 08:00:33,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:33,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458387757] [2023-11-19 08:00:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:33,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458387757] [2023-11-19 08:00:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458387757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:33,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:33,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167111204] [2023-11-19 08:00:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:33,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:33,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:33,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 306 [2023-11-19 08:00:33,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:33,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 306 [2023-11-19 08:00:33,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:34,213 INFO L124 PetriNetUnfolderBase]: 1148/1802 cut-off events. [2023-11-19 08:00:34,214 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2023-11-19 08:00:34,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 1802 events. 1148/1802 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11040 event pairs, 441 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 2043. Up to 936 conditions per place. [2023-11-19 08:00:34,231 INFO L140 encePairwiseOnDemand]: 301/306 looper letters, 76 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-11-19 08:00:34,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 83 transitions, 368 flow [2023-11-19 08:00:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:00:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 589 transitions. [2023-11-19 08:00:34,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812091503267974 [2023-11-19 08:00:34,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 589 transitions. [2023-11-19 08:00:34,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 589 transitions. [2023-11-19 08:00:34,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:34,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 589 transitions. [2023-11-19 08:00:34,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 306.0) internal successors, (1530), 5 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,243 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 104 flow. Second operand 4 states and 589 transitions. [2023-11-19 08:00:34,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 83 transitions, 368 flow [2023-11-19 08:00:34,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 83 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:34,246 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 128 flow [2023-11-19 08:00:34,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-11-19 08:00:34,248 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2023-11-19 08:00:34,248 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 128 flow [2023-11-19 08:00:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:34,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:34,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:34,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash 867452147, now seen corresponding path program 1 times [2023-11-19 08:00:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199704507] [2023-11-19 08:00:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:34,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:34,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:34,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199704507] [2023-11-19 08:00:34,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199704507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:34,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:34,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330484599] [2023-11-19 08:00:34,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:34,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:34,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:34,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 306 [2023-11-19 08:00:34,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:34,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 306 [2023-11-19 08:00:34,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:34,932 INFO L124 PetriNetUnfolderBase]: 1485/2279 cut-off events. [2023-11-19 08:00:34,933 INFO L125 PetriNetUnfolderBase]: For 733/733 co-relation queries the response was YES. [2023-11-19 08:00:34,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2279 events. 1485/2279 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 13514 event pairs, 636 based on Foata normal form. 56/1405 useless extension candidates. Maximal degree in co-relation 2678. Up to 1357 conditions per place. [2023-11-19 08:00:34,955 INFO L140 encePairwiseOnDemand]: 299/306 looper letters, 112 selfloop transitions, 8 changer transitions 0/123 dead transitions. [2023-11-19 08:00:34,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 123 transitions, 568 flow [2023-11-19 08:00:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:00:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:00:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 860 transitions. [2023-11-19 08:00:34,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684095860566449 [2023-11-19 08:00:34,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 860 transitions. [2023-11-19 08:00:34,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 860 transitions. [2023-11-19 08:00:34,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:34,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 860 transitions. [2023-11-19 08:00:34,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,971 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 128 flow. Second operand 6 states and 860 transitions. [2023-11-19 08:00:34,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 123 transitions, 568 flow [2023-11-19 08:00:34,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 123 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:34,984 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 187 flow [2023-11-19 08:00:34,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-19 08:00:34,986 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2023-11-19 08:00:34,987 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 187 flow [2023-11-19 08:00:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:34,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:34,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:34,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash 867454118, now seen corresponding path program 1 times [2023-11-19 08:00:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:34,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892478645] [2023-11-19 08:00:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:35,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892478645] [2023-11-19 08:00:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892478645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807211638] [2023-11-19 08:00:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:35,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:35,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:35,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:35,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:35,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:00:35,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:35,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:35,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807211638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:35,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 08:00:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141782405] [2023-11-19 08:00:35,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:35,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:35,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-11-19 08:00:35,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:35,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:35,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-11-19 08:00:35,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:36,107 INFO L124 PetriNetUnfolderBase]: 2305/3435 cut-off events. [2023-11-19 08:00:36,107 INFO L125 PetriNetUnfolderBase]: For 979/979 co-relation queries the response was YES. [2023-11-19 08:00:36,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9236 conditions, 3435 events. 2305/3435 cut-off events. For 979/979 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 20569 event pairs, 129 based on Foata normal form. 0/2294 useless extension candidates. Maximal degree in co-relation 7994. Up to 915 conditions per place. [2023-11-19 08:00:36,144 INFO L140 encePairwiseOnDemand]: 297/306 looper letters, 140 selfloop transitions, 19 changer transitions 0/162 dead transitions. [2023-11-19 08:00:36,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 162 transitions, 826 flow [2023-11-19 08:00:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:00:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1062 transitions. [2023-11-19 08:00:36,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2023-11-19 08:00:36,149 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1062 transitions. [2023-11-19 08:00:36,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1062 transitions. [2023-11-19 08:00:36,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:36,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1062 transitions. [2023-11-19 08:00:36,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.71428571428572) internal successors, (1062), 7 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:36,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:36,161 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:36,161 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 187 flow. Second operand 7 states and 1062 transitions. [2023-11-19 08:00:36,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 162 transitions, 826 flow [2023-11-19 08:00:36,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 162 transitions, 818 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:36,173 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 291 flow [2023-11-19 08:00:36,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-11-19 08:00:36,174 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2023-11-19 08:00:36,174 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 291 flow [2023-11-19 08:00:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:36,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:36,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:36,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:36,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:36,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash 867454073, now seen corresponding path program 1 times [2023-11-19 08:00:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:36,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945358659] [2023-11-19 08:00:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:36,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945358659] [2023-11-19 08:00:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945358659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5390342] [2023-11-19 08:00:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:36,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 306 [2023-11-19 08:00:36,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 291 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) [2023-11-19 08:00:36,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:36,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 306 [2023-11-19 08:00:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:36,906 INFO L124 PetriNetUnfolderBase]: 1957/2972 cut-off events. [2023-11-19 08:00:36,907 INFO L125 PetriNetUnfolderBase]: For 1698/1698 co-relation queries the response was YES. [2023-11-19 08:00:36,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8612 conditions, 2972 events. 1957/2972 cut-off events. For 1698/1698 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 18612 event pairs, 12 based on Foata normal form. 280/2454 useless extension candidates. Maximal degree in co-relation 7960. Up to 2919 conditions per place. [2023-11-19 08:00:36,948 INFO L140 encePairwiseOnDemand]: 302/306 looper letters, 59 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-11-19 08:00:36,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 380 flow [2023-11-19 08:00:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-19 08:00:36,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793028322440087 [2023-11-19 08:00:36,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-19 08:00:36,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-19 08:00:36,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:36,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-19 08:00:36,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:36,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:36,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:36,959 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 291 flow. Second operand 3 states and 440 transitions. [2023-11-19 08:00:36,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 380 flow [2023-11-19 08:00:36,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 368 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:36,979 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 211 flow [2023-11-19 08:00:36,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-19 08:00:36,980 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-11-19 08:00:36,980 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 211 flow [2023-11-19 08:00:36,981 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) [2023-11-19 08:00:36,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:36,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:36,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:00:36,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:36,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:36,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1121213563, now seen corresponding path program 1 times [2023-11-19 08:00:36,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:36,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56116075] [2023-11-19 08:00:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:36,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:37,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56116075] [2023-11-19 08:00:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56116075] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:37,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298118637] [2023-11-19 08:00:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:37,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:37,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:37,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:37,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:37,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:00:37,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:37,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298118637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:37,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:37,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-19 08:00:37,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819250662] [2023-11-19 08:00:37,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:37,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:00:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:00:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:00:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 306 [2023-11-19 08:00:37,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 211 flow. Second operand has 14 states, 14 states have (on average 123.28571428571429) internal successors, (1726), 14 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:37,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:37,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 306 [2023-11-19 08:00:37,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:39,771 INFO L124 PetriNetUnfolderBase]: 6605/9981 cut-off events. [2023-11-19 08:00:39,771 INFO L125 PetriNetUnfolderBase]: For 3846/3846 co-relation queries the response was YES. [2023-11-19 08:00:39,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27746 conditions, 9981 events. 6605/9981 cut-off events. For 3846/3846 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 69278 event pairs, 597 based on Foata normal form. 364/7689 useless extension candidates. Maximal degree in co-relation 22276. Up to 1681 conditions per place. [2023-11-19 08:00:39,857 INFO L140 encePairwiseOnDemand]: 297/306 looper letters, 690 selfloop transitions, 67 changer transitions 0/760 dead transitions. [2023-11-19 08:00:39,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 760 transitions, 3701 flow [2023-11-19 08:00:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-19 08:00:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-19 08:00:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5273 transitions. [2023-11-19 08:00:39,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657304363186716 [2023-11-19 08:00:39,878 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5273 transitions. [2023-11-19 08:00:39,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5273 transitions. [2023-11-19 08:00:39,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:39,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5273 transitions. [2023-11-19 08:00:39,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 142.51351351351352) internal successors, (5273), 37 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:39,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 306.0) internal successors, (11628), 38 states have internal predecessors, (11628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:39,928 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 306.0) internal successors, (11628), 38 states have internal predecessors, (11628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:39,928 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 211 flow. Second operand 37 states and 5273 transitions. [2023-11-19 08:00:39,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 760 transitions, 3701 flow [2023-11-19 08:00:39,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 760 transitions, 3700 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:40,001 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 881 flow [2023-11-19 08:00:40,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=881, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2023-11-19 08:00:40,003 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 71 predicate places. [2023-11-19 08:00:40,004 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 881 flow [2023-11-19 08:00:40,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 123.28571428571429) internal successors, (1726), 14 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:40,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:40,005 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:40,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 08:00:40,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:40,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash -166938027, now seen corresponding path program 1 times [2023-11-19 08:00:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018584249] [2023-11-19 08:00:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:40,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018584249] [2023-11-19 08:00:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018584249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170356423] [2023-11-19 08:00:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:40,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 306 [2023-11-19 08:00:40,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 881 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:40,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:40,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 306 [2023-11-19 08:00:40,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:43,336 INFO L124 PetriNetUnfolderBase]: 10207/15272 cut-off events. [2023-11-19 08:00:43,336 INFO L125 PetriNetUnfolderBase]: For 51459/51459 co-relation queries the response was YES. [2023-11-19 08:00:43,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52925 conditions, 15272 events. 10207/15272 cut-off events. For 51459/51459 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 110276 event pairs, 4681 based on Foata normal form. 0/11186 useless extension candidates. Maximal degree in co-relation 51360. Up to 9968 conditions per place. [2023-11-19 08:00:43,539 INFO L140 encePairwiseOnDemand]: 299/306 looper letters, 213 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2023-11-19 08:00:43,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 218 transitions, 2158 flow [2023-11-19 08:00:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-11-19 08:00:43,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485838779956427 [2023-11-19 08:00:43,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-11-19 08:00:43,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-11-19 08:00:43,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:43,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-11-19 08:00:43,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:43,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:43,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:43,548 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 881 flow. Second operand 3 states and 446 transitions. [2023-11-19 08:00:43,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 218 transitions, 2158 flow [2023-11-19 08:00:43,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 218 transitions, 1770 flow, removed 140 selfloop flow, removed 7 redundant places. [2023-11-19 08:00:43,873 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 707 flow [2023-11-19 08:00:43,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=707, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2023-11-19 08:00:43,876 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 67 predicate places. [2023-11-19 08:00:43,877 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 707 flow [2023-11-19 08:00:43,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:43,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:43,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:43,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:00:43,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:43,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:43,878 INFO L85 PathProgramCache]: Analyzing trace with hash 399773882, now seen corresponding path program 1 times [2023-11-19 08:00:43,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:43,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857514037] [2023-11-19 08:00:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:43,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:43,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:43,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857514037] [2023-11-19 08:00:43,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857514037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430829514] [2023-11-19 08:00:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:43,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:43,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:00:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:44,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:00:44,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:44,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:44,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430829514] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:44,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:44,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-19 08:00:44,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216415775] [2023-11-19 08:00:44,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:44,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:00:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:00:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:44,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 306 [2023-11-19 08:00:44,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 707 flow. Second operand has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:44,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:44,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 306 [2023-11-19 08:00:44,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:47,215 INFO L124 PetriNetUnfolderBase]: 9815/14652 cut-off events. [2023-11-19 08:00:47,215 INFO L125 PetriNetUnfolderBase]: For 24619/24619 co-relation queries the response was YES. [2023-11-19 08:00:47,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48928 conditions, 14652 events. 9815/14652 cut-off events. For 24619/24619 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 107522 event pairs, 61 based on Foata normal form. 252/11824 useless extension candidates. Maximal degree in co-relation 46632. Up to 9450 conditions per place. [2023-11-19 08:00:47,387 INFO L140 encePairwiseOnDemand]: 301/306 looper letters, 168 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2023-11-19 08:00:47,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 187 transitions, 1325 flow [2023-11-19 08:00:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:00:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:00:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 864 transitions. [2023-11-19 08:00:47,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2023-11-19 08:00:47,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 864 transitions. [2023-11-19 08:00:47,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 864 transitions. [2023-11-19 08:00:47,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:47,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 864 transitions. [2023-11-19 08:00:47,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,403 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 306.0) internal successors, (2142), 7 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,403 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 707 flow. Second operand 6 states and 864 transitions. [2023-11-19 08:00:47,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 187 transitions, 1325 flow [2023-11-19 08:00:47,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 187 transitions, 1315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:47,934 INFO L231 Difference]: Finished difference. Result has 103 places, 111 transitions, 713 flow [2023-11-19 08:00:47,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=103, PETRI_TRANSITIONS=111} [2023-11-19 08:00:47,935 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 66 predicate places. [2023-11-19 08:00:47,935 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 111 transitions, 713 flow [2023-11-19 08:00:47,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:47,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:47,936 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:00:47,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:48,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:00:48,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 08:00:48,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1523197753, now seen corresponding path program 1 times [2023-11-19 08:00:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430515036] [2023-11-19 08:00:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:48,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:48,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:48,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:48,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-19 08:00:48,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-19 08:00:48,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-19 08:00:48,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-19 08:00:48,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-19 08:00:48,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-19 08:00:48,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-19 08:00:48,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-19 08:00:48,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-19 08:00:48,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-19 08:00:48,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-19 08:00:48,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-19 08:00:48,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-19 08:00:48,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-19 08:00:48,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-19 08:00:48,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-19 08:00:48,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-19 08:00:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-19 08:00:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-19 08:00:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-19 08:00:48,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-19 08:00:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-19 08:00:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-19 08:00:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-19 08:00:48,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-19 08:00:48,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:00:48,215 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:48,216 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:00:48,216 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:00:48,271 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:48,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 215 transitions, 448 flow [2023-11-19 08:00:48,332 INFO L124 PetriNetUnfolderBase]: 31/252 cut-off events. [2023-11-19 08:00:48,332 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:00:48,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 252 events. 31/252 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 852 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-11-19 08:00:48,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 215 transitions, 448 flow [2023-11-19 08:00:48,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 215 transitions, 448 flow [2023-11-19 08:00:48,339 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:48,339 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 215 transitions, 448 flow [2023-11-19 08:00:48,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 215 transitions, 448 flow [2023-11-19 08:00:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 215 transitions, 448 flow [2023-11-19 08:00:48,391 INFO L124 PetriNetUnfolderBase]: 31/252 cut-off events. [2023-11-19 08:00:48,391 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:00:48,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 252 events. 31/252 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 852 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 202. Up to 8 conditions per place. [2023-11-19 08:00:48,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 29484 [2023-11-19 08:00:54,472 INFO L134 LiptonReduction]: Checked pairs total: 24674 [2023-11-19 08:00:54,472 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-11-19 08:00:54,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:54,474 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;@75a6c758, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:54,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-19 08:00:54,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:54,476 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-19 08:00:54,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:54,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:54,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:54,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:00:54,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1200999246, now seen corresponding path program 1 times [2023-11-19 08:00:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:54,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873604742] [2023-11-19 08:00:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:54,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873604742] [2023-11-19 08:00:54,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873604742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:54,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:54,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:54,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617590554] [2023-11-19 08:00:54,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:54,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:54,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:54,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 440 [2023-11-19 08:00:54,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:54,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:54,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 440 [2023-11-19 08:00:54,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:57,354 INFO L124 PetriNetUnfolderBase]: 21605/29284 cut-off events. [2023-11-19 08:00:57,354 INFO L125 PetriNetUnfolderBase]: For 1963/1963 co-relation queries the response was YES. [2023-11-19 08:00:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59318 conditions, 29284 events. 21605/29284 cut-off events. For 1963/1963 co-relation queries the response was YES. Maximal size of possible extension queue 2024. Compared 186187 event pairs, 10620 based on Foata normal form. 0/10971 useless extension candidates. Maximal degree in co-relation 8538. Up to 18585 conditions per place. [2023-11-19 08:00:57,553 INFO L140 encePairwiseOnDemand]: 429/440 looper letters, 90 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-19 08:00:57,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 404 flow [2023-11-19 08:00:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-11-19 08:00:57,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2023-11-19 08:00:57,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-11-19 08:00:57,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-11-19 08:00:57,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:57,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-11-19 08:00:57,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,565 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 132 flow. Second operand 3 states and 666 transitions. [2023-11-19 08:00:57,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 404 flow [2023-11-19 08:00:57,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 400 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:57,569 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 142 flow [2023-11-19 08:00:57,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2023-11-19 08:00:57,570 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-19 08:00:57,571 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 142 flow [2023-11-19 08:00:57,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:57,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:00:57,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:00:57,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1185796486, now seen corresponding path program 1 times [2023-11-19 08:00:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:57,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590122366] [2023-11-19 08:00:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:57,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:57,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590122366] [2023-11-19 08:00:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590122366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:57,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890000251] [2023-11-19 08:00:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:57,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:57,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 440 [2023-11-19 08:00:57,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:57,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 440 [2023-11-19 08:00:57,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:59,789 INFO L124 PetriNetUnfolderBase]: 18584/24839 cut-off events. [2023-11-19 08:00:59,789 INFO L125 PetriNetUnfolderBase]: For 1833/1833 co-relation queries the response was YES. [2023-11-19 08:00:59,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52566 conditions, 24839 events. 18584/24839 cut-off events. For 1833/1833 co-relation queries the response was YES. Maximal size of possible extension queue 1695. Compared 161970 event pairs, 480 based on Foata normal form. 366/11031 useless extension candidates. Maximal degree in co-relation 52325. Up to 23798 conditions per place. [2023-11-19 08:00:59,931 INFO L140 encePairwiseOnDemand]: 436/440 looper letters, 80 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2023-11-19 08:00:59,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 368 flow [2023-11-19 08:00:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-11-19 08:00:59,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787878787878786 [2023-11-19 08:00:59,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-11-19 08:00:59,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-11-19 08:00:59,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:59,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-11-19 08:00:59,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,958 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 142 flow. Second operand 3 states and 644 transitions. [2023-11-19 08:00:59,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 368 flow [2023-11-19 08:00:59,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:59,962 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 130 flow [2023-11-19 08:00:59,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-11-19 08:00:59,963 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-11-19 08:00:59,963 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 130 flow [2023-11-19 08:00:59,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:59,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:59,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:00:59,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:00:59,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1185799107, now seen corresponding path program 1 times [2023-11-19 08:00:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017053275] [2023-11-19 08:00:59,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:00,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017053275] [2023-11-19 08:01:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017053275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:00,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:00,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:01:00,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124850863] [2023-11-19 08:01:00,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:00,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:01:00,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:01:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:01:00,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 440 [2023-11-19 08:01:00,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:00,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 440 [2023-11-19 08:01:00,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:03,253 INFO L124 PetriNetUnfolderBase]: 26456/35152 cut-off events. [2023-11-19 08:01:03,254 INFO L125 PetriNetUnfolderBase]: For 3052/3052 co-relation queries the response was YES. [2023-11-19 08:01:03,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73931 conditions, 35152 events. 26456/35152 cut-off events. For 3052/3052 co-relation queries the response was YES. Maximal size of possible extension queue 2332. Compared 221293 event pairs, 8085 based on Foata normal form. 0/15463 useless extension candidates. Maximal degree in co-relation 45814. Up to 15198 conditions per place. [2023-11-19 08:01:03,441 INFO L140 encePairwiseOnDemand]: 432/440 looper letters, 190 selfloop transitions, 9 changer transitions 0/202 dead transitions. [2023-11-19 08:01:03,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 202 transitions, 874 flow [2023-11-19 08:01:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1282 transitions. [2023-11-19 08:01:03,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4856060606060606 [2023-11-19 08:01:03,451 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1282 transitions. [2023-11-19 08:01:03,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1282 transitions. [2023-11-19 08:01:03,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:03,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1282 transitions. [2023-11-19 08:01:03,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.66666666666666) internal successors, (1282), 6 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 440.0) internal successors, (3080), 7 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,463 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 440.0) internal successors, (3080), 7 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,463 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 130 flow. Second operand 6 states and 1282 transitions. [2023-11-19 08:01:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 202 transitions, 874 flow [2023-11-19 08:01:03,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 202 transitions, 873 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:03,470 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 195 flow [2023-11-19 08:01:03,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-19 08:01:03,471 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-11-19 08:01:03,472 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 195 flow [2023-11-19 08:01:03,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:03,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:03,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:01:03,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:01:03,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:03,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1185799122, now seen corresponding path program 1 times [2023-11-19 08:01:03,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:03,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501925732] [2023-11-19 08:01:03,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:03,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:03,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:03,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501925732] [2023-11-19 08:01:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501925732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:03,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:03,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:03,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724256936] [2023-11-19 08:01:03,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:03,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:01:03,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:03,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 440 [2023-11-19 08:01:03,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:03,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 440 [2023-11-19 08:01:03,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:07,382 INFO L124 PetriNetUnfolderBase]: 27097/36132 cut-off events. [2023-11-19 08:01:07,383 INFO L125 PetriNetUnfolderBase]: For 7430/7430 co-relation queries the response was YES. [2023-11-19 08:01:07,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88408 conditions, 36132 events. 27097/36132 cut-off events. For 7430/7430 co-relation queries the response was YES. Maximal size of possible extension queue 2429. Compared 232369 event pairs, 7240 based on Foata normal form. 1098/19522 useless extension candidates. Maximal degree in co-relation 66012. Up to 16567 conditions per place. [2023-11-19 08:01:07,578 INFO L140 encePairwiseOnDemand]: 435/440 looper letters, 124 selfloop transitions, 6 changer transitions 0/133 dead transitions. [2023-11-19 08:01:07,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 133 transitions, 637 flow [2023-11-19 08:01:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:01:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 861 transitions. [2023-11-19 08:01:07,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48920454545454545 [2023-11-19 08:01:07,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 861 transitions. [2023-11-19 08:01:07,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 861 transitions. [2023-11-19 08:01:07,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:07,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 861 transitions. [2023-11-19 08:01:07,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:07,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:07,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:07,589 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 195 flow. Second operand 4 states and 861 transitions. [2023-11-19 08:01:07,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 133 transitions, 637 flow [2023-11-19 08:01:07,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 133 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:07,955 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 219 flow [2023-11-19 08:01:07,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-11-19 08:01:07,956 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-11-19 08:01:07,956 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 219 flow [2023-11-19 08:01:07,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:07,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:07,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:07,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:01:07,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-19 08:01:07,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1185796391, now seen corresponding path program 1 times [2023-11-19 08:01:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:07,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191015184] [2023-11-19 08:01:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:07,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:07,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191015184] [2023-11-19 08:01:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191015184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614606654] [2023-11-19 08:01:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:07,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:07,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:07,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:08,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_922fe891-2a7e-4592-99ed-1f0f64683e24/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:01:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:08,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:01:08,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:08,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614606654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:08,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:08,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 08:01:08,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633153244] [2023-11-19 08:01:08,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:08,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:01:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:08,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 440 [2023-11-19 08:01:08,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:08,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:08,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 440 [2023-11-19 08:01:08,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand