./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme --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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:24,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:24,598 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:51:24,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:24,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:24,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:24,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:24,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:24,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:24,638 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:24,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:24,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:24,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:24,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:24,644 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:24,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:24,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:24,651 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:24,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:24,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:24,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:24,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:24,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:24,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:24,655 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:51:24,657 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:51:24,657 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:24,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:24,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:24,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:24,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:24,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:24,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:24,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:24,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:24,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:24,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:24,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:24,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:24,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:24,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:24,665 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:24,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:24,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:24,667 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_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-26 11:51:25,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:25,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:25,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:25,039 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:25,040 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:25,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 11:51:28,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:51:28,624 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:51:28,625 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 11:51:28,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/data/47753e065/e97268b4297b4250ae0ae90aefd02b59/FLAGb8e27b1b4 [2023-11-26 11:51:28,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/data/47753e065/e97268b4297b4250ae0ae90aefd02b59 [2023-11-26 11:51:28,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:51:28,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:51:28,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:28,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:51:28,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:51:28,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:28,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d92e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28, skipping insertion in model container [2023-11-26 11:51:28,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:28,694 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:51:28,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:28,923 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:51:28,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:28,975 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:51:28,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28 WrapperNode [2023-11-26 11:51:28,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:28,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:28,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:51:28,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:51:28,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:28,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,024 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2023-11-26 11:51:29,024 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:29,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:51:29,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:51:29,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:51:29,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,063 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 2, 2, 15]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 3]. [2023-11-26 11:51:29,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,096 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:51:29,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:51:29,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:51:29,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:51:29,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (1/1) ... [2023-11-26 11:51:29,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:29,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:29,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:51:29,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:51:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:51:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:51:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:51:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:51:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:51:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:51:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:51:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:51:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:51:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:51:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:51:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:51:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:51:29,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:51:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:51:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:51:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:51:29,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:51:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:51:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:51:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:51:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:51:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:51:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:51:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:51:29,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:51:29,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:51:29,181 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:51:29,326 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:51:29,328 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:51:29,860 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:51:30,406 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:51:30,406 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 11:51:30,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:30 BoogieIcfgContainer [2023-11-26 11:51:30,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:51:30,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:51:30,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:51:30,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:51:30,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:51:28" (1/3) ... [2023-11-26 11:51:30,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5132896b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:30, skipping insertion in model container [2023-11-26 11:51:30,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:28" (2/3) ... [2023-11-26 11:51:30,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5132896b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:30, skipping insertion in model container [2023-11-26 11:51:30,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:30" (3/3) ... [2023-11-26 11:51:30,421 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-26 11:51:30,431 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:51:30,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:51:30,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-26 11:51:30,443 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:51:30,560 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:51:30,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 91 transitions, 203 flow [2023-11-26 11:51:30,668 INFO L124 PetriNetUnfolderBase]: 15/88 cut-off events. [2023-11-26 11:51:30,668 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:51:30,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 15/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-11-26 11:51:30,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 91 transitions, 203 flow [2023-11-26 11:51:30,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 86 transitions, 187 flow [2023-11-26 11:51:30,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:51:30,712 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;@2cbd205f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:51:30,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-26 11:51:30,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:51:30,718 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:51:30,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:51:30,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:30,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:51:30,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:30,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash 797623, now seen corresponding path program 1 times [2023-11-26 11:51:30,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:30,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38939530] [2023-11-26 11:51:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:30,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38939530] [2023-11-26 11:51:31,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38939530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:31,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:31,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546028234] [2023-11-26 11:51:31,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:31,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:31,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:31,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-26 11:51:31,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-26 11:51:31,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:31,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-26 11:51:31,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:32,749 INFO L124 PetriNetUnfolderBase]: 4197/7110 cut-off events. [2023-11-26 11:51:32,750 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-11-26 11:51:32,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12679 conditions, 7110 events. 4197/7110 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 47594 event pairs, 2653 based on Foata normal form. 3/4933 useless extension candidates. Maximal degree in co-relation 11574. Up to 5339 conditions per place. [2023-11-26 11:51:32,884 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 55 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2023-11-26 11:51:32,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 335 flow [2023-11-26 11:51:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:32,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-11-26 11:51:32,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2023-11-26 11:51:32,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-11-26 11:51:32,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-11-26 11:51:32,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:32,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-11-26 11:51:32,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-26 11:51:32,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-11-26 11:51:32,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-11-26 11:51:32,919 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 187 flow. Second operand 4 states and 203 transitions. [2023-11-26 11:51:32,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 335 flow [2023-11-26 11:51:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 95 transitions, 326 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:51:32,934 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 266 flow [2023-11-26 11:51:32,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2023-11-26 11:51:32,943 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2023-11-26 11:51:32,943 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 266 flow [2023-11-26 11:51:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-26 11:51:32,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:32,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:51:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:51:32,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:32,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2007025126, now seen corresponding path program 1 times [2023-11-26 11:51:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:32,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105573320] [2023-11-26 11:51:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:33,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105573320] [2023-11-26 11:51:33,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105573320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681345823] [2023-11-26 11:51:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:33,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:33,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:33,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:51:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:51:33,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:33,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:33,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681345823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:33,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:51:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052883573] [2023-11-26 11:51:33,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:51:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:51:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:33,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-26 11:51:33,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2023-11-26 11:51:33,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:33,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-26 11:51:33,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:34,455 INFO L124 PetriNetUnfolderBase]: 4197/7107 cut-off events. [2023-11-26 11:51:34,456 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 11:51:34,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 7107 events. 4197/7107 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 47549 event pairs, 2653 based on Foata normal form. 3/4935 useless extension candidates. Maximal degree in co-relation 12551. Up to 5324 conditions per place. [2023-11-26 11:51:34,529 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 45 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2023-11-26 11:51:34,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 92 transitions, 378 flow [2023-11-26 11:51:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:51:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:51:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2023-11-26 11:51:34,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816849816849817 [2023-11-26 11:51:34,542 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 263 transitions. [2023-11-26 11:51:34,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 263 transitions. [2023-11-26 11:51:34,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:34,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 263 transitions. [2023-11-26 11:51:34,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 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) [2023-11-26 11:51:34,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2023-11-26 11:51:34,550 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 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) [2023-11-26 11:51:34,550 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 266 flow. Second operand 6 states and 263 transitions. [2023-11-26 11:51:34,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 92 transitions, 378 flow [2023-11-26 11:51:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:51:34,556 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 288 flow [2023-11-26 11:51:34,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-11-26 11:51:34,557 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2023-11-26 11:51:34,558 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 288 flow [2023-11-26 11:51:34,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2023-11-26 11:51:34,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:34,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:51:34,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:51:34,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:34,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:34,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2088235965, now seen corresponding path program 1 times [2023-11-26 11:51:34,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:34,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858903291] [2023-11-26 11:51:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:34,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:34,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858903291] [2023-11-26 11:51:34,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858903291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:34,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373670612] [2023-11-26 11:51:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:34,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:34,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:34,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:51:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:35,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:51:35,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:35,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373670612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:35,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:35,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 11:51:35,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909061163] [2023-11-26 11:51:35,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:35,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:51:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:51:35,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:51:35,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2023-11-26 11:51:35,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 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) [2023-11-26 11:51:35,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:35,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2023-11-26 11:51:35,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:36,471 INFO L124 PetriNetUnfolderBase]: 4206/7143 cut-off events. [2023-11-26 11:51:36,471 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-26 11:51:36,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12765 conditions, 7143 events. 4206/7143 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 48034 event pairs, 2653 based on Foata normal form. 9/4977 useless extension candidates. Maximal degree in co-relation 12553. Up to 5339 conditions per place. [2023-11-26 11:51:36,536 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 52 selfloop transitions, 37 changer transitions 0/119 dead transitions. [2023-11-26 11:51:36,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 640 flow [2023-11-26 11:51:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:51:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:51:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 428 transitions. [2023-11-26 11:51:36,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703296703296703 [2023-11-26 11:51:36,539 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 428 transitions. [2023-11-26 11:51:36,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 428 transitions. [2023-11-26 11:51:36,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:36,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 428 transitions. [2023-11-26 11:51:36,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.8) internal successors, (428), 10 states have internal predecessors, (428), 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) [2023-11-26 11:51:36,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2023-11-26 11:51:36,546 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2023-11-26 11:51:36,546 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 288 flow. Second operand 10 states and 428 transitions. [2023-11-26 11:51:36,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 640 flow [2023-11-26 11:51:36,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 557 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-26 11:51:36,558 INFO L231 Difference]: Finished difference. Result has 91 places, 119 transitions, 503 flow [2023-11-26 11:51:36,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=119} [2023-11-26 11:51:36,560 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2023-11-26 11:51:36,560 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 503 flow [2023-11-26 11:51:36,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 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) [2023-11-26 11:51:36,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:36,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:36,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:36,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:36,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:36,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 452543221, now seen corresponding path program 1 times [2023-11-26 11:51:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:36,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833282521] [2023-11-26 11:51:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:36,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:36,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833282521] [2023-11-26 11:51:36,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833282521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:36,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:36,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:36,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752329367] [2023-11-26 11:51:36,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:36,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:36,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:36,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-26 11:51:36,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-11-26 11:51:36,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:36,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-26 11:51:36,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:38,455 INFO L124 PetriNetUnfolderBase]: 7405/11316 cut-off events. [2023-11-26 11:51:38,455 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-26 11:51:38,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21344 conditions, 11316 events. 7405/11316 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 68211 event pairs, 3613 based on Foata normal form. 146/8160 useless extension candidates. Maximal degree in co-relation 21246. Up to 7218 conditions per place. [2023-11-26 11:51:38,553 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 141 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-11-26 11:51:38,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 175 transitions, 911 flow [2023-11-26 11:51:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:38,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-26 11:51:38,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-26 11:51:38,559 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-26 11:51:38,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-26 11:51:38,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:38,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-26 11:51:38,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2023-11-26 11:51:38,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-11-26 11:51:38,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-11-26 11:51:38,565 INFO L175 Difference]: Start difference. First operand has 91 places, 119 transitions, 503 flow. Second operand 4 states and 255 transitions. [2023-11-26 11:51:38,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 175 transitions, 911 flow [2023-11-26 11:51:38,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 175 transitions, 874 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-26 11:51:38,576 INFO L231 Difference]: Finished difference. Result has 94 places, 122 transitions, 495 flow [2023-11-26 11:51:38,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=495, PETRI_PLACES=94, PETRI_TRANSITIONS=122} [2023-11-26 11:51:38,579 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2023-11-26 11:51:38,579 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 495 flow [2023-11-26 11:51:38,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2023-11-26 11:51:38,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:38,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:38,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:51:38,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:38,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:38,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1143970576, now seen corresponding path program 1 times [2023-11-26 11:51:38,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:38,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677080841] [2023-11-26 11:51:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:38,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:38,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:38,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677080841] [2023-11-26 11:51:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677080841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:38,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:38,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:38,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426452574] [2023-11-26 11:51:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:38,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:38,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:38,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-26 11:51:38,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 495 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2023-11-26 11:51:38,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:38,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-26 11:51:38,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:41,784 INFO L124 PetriNetUnfolderBase]: 13963/23613 cut-off events. [2023-11-26 11:51:41,785 INFO L125 PetriNetUnfolderBase]: For 2786/2786 co-relation queries the response was YES. [2023-11-26 11:51:41,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44410 conditions, 23613 events. 13963/23613 cut-off events. For 2786/2786 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 187496 event pairs, 8506 based on Foata normal form. 230/17454 useless extension candidates. Maximal degree in co-relation 44286. Up to 8889 conditions per place. [2023-11-26 11:51:42,018 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 139 selfloop transitions, 9 changer transitions 0/180 dead transitions. [2023-11-26 11:51:42,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 180 transitions, 990 flow [2023-11-26 11:51:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:51:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2023-11-26 11:51:42,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263736263736264 [2023-11-26 11:51:42,021 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 285 transitions. [2023-11-26 11:51:42,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 285 transitions. [2023-11-26 11:51:42,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:42,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 285 transitions. [2023-11-26 11:51:42,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-26 11:51:42,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2023-11-26 11:51:42,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2023-11-26 11:51:42,026 INFO L175 Difference]: Start difference. First operand has 94 places, 122 transitions, 495 flow. Second operand 5 states and 285 transitions. [2023-11-26 11:51:42,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 180 transitions, 990 flow [2023-11-26 11:51:42,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 180 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:42,037 INFO L231 Difference]: Finished difference. Result has 99 places, 123 transitions, 526 flow [2023-11-26 11:51:42,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2023-11-26 11:51:42,038 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2023-11-26 11:51:42,038 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 526 flow [2023-11-26 11:51:42,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2023-11-26 11:51:42,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:42,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:42,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:51:42,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:42,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1998577639, now seen corresponding path program 1 times [2023-11-26 11:51:42,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:42,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113526398] [2023-11-26 11:51:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:42,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113526398] [2023-11-26 11:51:42,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113526398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:42,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:42,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46797691] [2023-11-26 11:51:42,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:42,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:51:42,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:42,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:51:42,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:51:42,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2023-11-26 11:51:42,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-26 11:51:42,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:42,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2023-11-26 11:51:42,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:45,805 INFO L124 PetriNetUnfolderBase]: 22842/33986 cut-off events. [2023-11-26 11:51:45,806 INFO L125 PetriNetUnfolderBase]: For 4098/4458 co-relation queries the response was YES. [2023-11-26 11:51:45,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68272 conditions, 33986 events. 22842/33986 cut-off events. For 4098/4458 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 225318 event pairs, 10962 based on Foata normal form. 464/26627 useless extension candidates. Maximal degree in co-relation 68144. Up to 21780 conditions per place. [2023-11-26 11:51:46,126 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 147 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2023-11-26 11:51:46,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 978 flow [2023-11-26 11:51:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:51:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:51:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-26 11:51:46,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-26 11:51:46,129 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-26 11:51:46,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-26 11:51:46,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:46,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-26 11:51:46,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2023-11-26 11:51:46,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-11-26 11:51:46,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 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) [2023-11-26 11:51:46,133 INFO L175 Difference]: Start difference. First operand has 99 places, 123 transitions, 526 flow. Second operand 4 states and 255 transitions. [2023-11-26 11:51:46,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 978 flow [2023-11-26 11:51:46,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 183 transitions, 975 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:46,145 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 552 flow [2023-11-26 11:51:46,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=552, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2023-11-26 11:51:46,146 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 22 predicate places. [2023-11-26 11:51:46,146 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 552 flow [2023-11-26 11:51:46,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-26 11:51:46,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:46,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:46,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:51:46,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:46,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1103350359, now seen corresponding path program 1 times [2023-11-26 11:51:46,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:46,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42376189] [2023-11-26 11:51:46,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:46,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:46,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:46,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42376189] [2023-11-26 11:51:46,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42376189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:46,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:46,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306585076] [2023-11-26 11:51:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:46,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:46,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-26 11:51:46,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2023-11-26 11:51:46,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:46,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-26 11:51:46,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:53,072 INFO L124 PetriNetUnfolderBase]: 40860/69080 cut-off events. [2023-11-26 11:51:53,072 INFO L125 PetriNetUnfolderBase]: For 18447/18519 co-relation queries the response was YES. [2023-11-26 11:51:53,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140194 conditions, 69080 events. 40860/69080 cut-off events. For 18447/18519 co-relation queries the response was YES. Maximal size of possible extension queue 2629. Compared 616100 event pairs, 24964 based on Foata normal form. 656/56069 useless extension candidates. Maximal degree in co-relation 139979. Up to 25425 conditions per place. [2023-11-26 11:51:53,691 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 159 selfloop transitions, 12 changer transitions 0/204 dead transitions. [2023-11-26 11:51:53,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 204 transitions, 1228 flow [2023-11-26 11:51:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:53,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:51:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 368 transitions. [2023-11-26 11:51:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777080062794349 [2023-11-26 11:51:53,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 368 transitions. [2023-11-26 11:51:53,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 368 transitions. [2023-11-26 11:51:53,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:53,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 368 transitions. [2023-11-26 11:51:53,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 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) [2023-11-26 11:51:53,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2023-11-26 11:51:53,703 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2023-11-26 11:51:53,703 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 552 flow. Second operand 7 states and 368 transitions. [2023-11-26 11:51:53,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 204 transitions, 1228 flow [2023-11-26 11:51:53,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 204 transitions, 1223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:51:53,822 INFO L231 Difference]: Finished difference. Result has 113 places, 135 transitions, 671 flow [2023-11-26 11:51:53,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=113, PETRI_TRANSITIONS=135} [2023-11-26 11:51:53,824 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2023-11-26 11:51:53,825 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 135 transitions, 671 flow [2023-11-26 11:51:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 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) [2023-11-26 11:51:53,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:53,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:51:53,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:51:53,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1826332033, now seen corresponding path program 1 times [2023-11-26 11:51:53,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:53,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173059554] [2023-11-26 11:51:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:53,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:53,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173059554] [2023-11-26 11:51:53,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173059554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:53,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:53,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214368360] [2023-11-26 11:51:53,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:53,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:53,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:54,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2023-11-26 11:51:54,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 135 transitions, 671 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2023-11-26 11:51:54,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:54,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2023-11-26 11:51:54,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:08,107 INFO L124 PetriNetUnfolderBase]: 84892/141180 cut-off events. [2023-11-26 11:52:08,107 INFO L125 PetriNetUnfolderBase]: For 25243/25387 co-relation queries the response was YES. [2023-11-26 11:52:08,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281282 conditions, 141180 events. 84892/141180 cut-off events. For 25243/25387 co-relation queries the response was YES. Maximal size of possible extension queue 5014. Compared 1340408 event pairs, 52104 based on Foata normal form. 644/111548 useless extension candidates. Maximal degree in co-relation 281060. Up to 53568 conditions per place. [2023-11-26 11:52:09,313 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 125 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2023-11-26 11:52:09,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 180 transitions, 1081 flow [2023-11-26 11:52:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:09,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2023-11-26 11:52:09,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197802197802198 [2023-11-26 11:52:09,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2023-11-26 11:52:09,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2023-11-26 11:52:09,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:09,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2023-11-26 11:52:09,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 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) [2023-11-26 11:52:09,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2023-11-26 11:52:09,321 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 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) [2023-11-26 11:52:09,321 INFO L175 Difference]: Start difference. First operand has 113 places, 135 transitions, 671 flow. Second operand 5 states and 282 transitions. [2023-11-26 11:52:09,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 180 transitions, 1081 flow [2023-11-26 11:52:09,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 180 transitions, 1079 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-26 11:52:09,502 INFO L231 Difference]: Finished difference. Result has 119 places, 136 transitions, 736 flow [2023-11-26 11:52:09,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=736, PETRI_PLACES=119, PETRI_TRANSITIONS=136} [2023-11-26 11:52:09,503 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2023-11-26 11:52:09,503 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 136 transitions, 736 flow [2023-11-26 11:52:09,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2023-11-26 11:52:09,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:09,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:09,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:52:09,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-26 11:52:09,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:09,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1034019953, now seen corresponding path program 1 times [2023-11-26 11:52:09,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:09,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354219306] [2023-11-26 11:52:09,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:09,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:09,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354219306] [2023-11-26 11:52:09,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354219306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679198365] [2023-11-26 11:52:09,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:09,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:09,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:09,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49816e-9cfe-417f-acd4-a31aaefecaeb/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:52:09,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:52:09,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:09,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679198365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:09,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-26 11:52:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686868553] [2023-11-26 11:52:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:09,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:09,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:09,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2023-11-26 11:52:09,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 136 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-26 11:52:09,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:09,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2023-11-26 11:52:09,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand