./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --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_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/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_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/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_0b2288ac-eb23-4a65-b821-6f61e034a9be/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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:50,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:50,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:57:50,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:50,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:50,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:50,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:50,862 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:50,863 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:50,872 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:50,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:50,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:50,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:50,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:50,878 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:50,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:50,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:50,879 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:50,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:50,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:50,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:50,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:50,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:50,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:50,885 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:57:50,886 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:57:50,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:50,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:50,887 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:50,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:50,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:50,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:50,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:50,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:50,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:50,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:50,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:50,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:50,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:50,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:50,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:50,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:50,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:50,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:50,896 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_0b2288ac-eb23-4a65-b821-6f61e034a9be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2023-11-26 11:57:51,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:51,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:51,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:51,318 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:51,319 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:51,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread/queue_longest.i [2023-11-26 11:57:54,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:55,016 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:55,017 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/sv-benchmarks/c/pthread/queue_longest.i [2023-11-26 11:57:55,038 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/data/577ff73e8/f4752d71c2c146f1a13825a8969c2b76/FLAGcb5570e7d [2023-11-26 11:57:55,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/data/577ff73e8/f4752d71c2c146f1a13825a8969c2b76 [2023-11-26 11:57:55,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:55,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:55,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:55,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:55,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:55,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:55" (1/1) ... [2023-11-26 11:57:55,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf7ee6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:55, skipping insertion in model container [2023-11-26 11:57:55,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:55" (1/1) ... [2023-11-26 11:57:55,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:55,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:55,884 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:55,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:56,056 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:56,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56 WrapperNode [2023-11-26 11:57:56,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:56,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:56,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:56,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:56,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,166 INFO L138 Inliner]: procedures = 275, calls = 66, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 278 [2023-11-26 11:57:56,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:56,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:56,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:56,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:56,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,260 INFO L175 MemorySlicer]: Split 47 memory accesses to 6 slices as follows [2, 2, 5, 4, 32, 2]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0, 0, 0]. The 20 writes are split as follows [0, 1, 0, 3, 15, 1]. [2023-11-26 11:57:56,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:56,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:56,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:56,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:56,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (1/1) ... [2023-11-26 11:57:56,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:56,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:56,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:56,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-26 11:57:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-26 11:57:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-26 11:57:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-26 11:57:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:57:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:57:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:57:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:57:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:57:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:57:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:57:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:57:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:57:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:57:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:57:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:57:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:57:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:57:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:57:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:57:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:57:56,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:57:56,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:57:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:57:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:57:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:56,447 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 11:57:56,691 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:56,694 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:57,261 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:57,786 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:57,786 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:57:57,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:57 BoogieIcfgContainer [2023-11-26 11:57:57,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:57,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:57,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:57,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:57,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:55" (1/3) ... [2023-11-26 11:57:57,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cc0c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:57, skipping insertion in model container [2023-11-26 11:57:57,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:56" (2/3) ... [2023-11-26 11:57:57,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cc0c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:57, skipping insertion in model container [2023-11-26 11:57:57,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:57" (3/3) ... [2023-11-26 11:57:57,800 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-11-26 11:57:57,812 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:57:57,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:57,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-26 11:57:57,826 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:57:57,948 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:57:58,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 84 transitions, 182 flow [2023-11-26 11:57:58,069 INFO L124 PetriNetUnfolderBase]: 9/82 cut-off events. [2023-11-26 11:57:58,070 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:57:58,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 9/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-11-26 11:57:58,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 84 transitions, 182 flow [2023-11-26 11:57:58,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 169 flow [2023-11-26 11:57:58,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:58,113 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;@e7f2541, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:58,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-26 11:57:58,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:57:58,124 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-26 11:57:58,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:57:58,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:58,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:57:58,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:57:58,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash 475583, now seen corresponding path program 1 times [2023-11-26 11:57:58,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:58,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673369035] [2023-11-26 11:57:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:58,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:58,959 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 11:57:58,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673369035] [2023-11-26 11:57:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673369035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:58,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:58,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:58,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757588818] [2023-11-26 11:57:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:58,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:57:58,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:59,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:57:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:57:59,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:57:59,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 11:57:59,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:57:59,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:57:59,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:57:59,845 INFO L124 PetriNetUnfolderBase]: 1255/2605 cut-off events. [2023-11-26 11:57:59,845 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-26 11:57:59,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 2605 events. 1255/2605 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16692 event pairs, 268 based on Foata normal form. 60/2288 useless extension candidates. Maximal degree in co-relation 4506. Up to 1781 conditions per place. [2023-11-26 11:57:59,881 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 82 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-11-26 11:57:59,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 427 flow [2023-11-26 11:57:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:57:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:57:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2023-11-26 11:57:59,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6023809523809524 [2023-11-26 11:57:59,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2023-11-26 11:57:59,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2023-11-26 11:57:59,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:57:59,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2023-11-26 11:57:59,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 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 11:57:59,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 11:57:59,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 11:57:59,917 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 169 flow. Second operand 5 states and 253 transitions. [2023-11-26 11:57:59,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 427 flow [2023-11-26 11:57:59,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:57:59,926 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 208 flow [2023-11-26 11:57:59,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-11-26 11:57:59,932 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2023-11-26 11:57:59,932 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 208 flow [2023-11-26 11:57:59,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 11:57:59,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:57:59,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:59,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:57:59,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:57:59,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:59,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1283963854, now seen corresponding path program 1 times [2023-11-26 11:57:59,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:59,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785249465] [2023-11-26 11:57:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:00,300 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 11:58:00,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785249465] [2023-11-26 11:58:00,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785249465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:00,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:00,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243965093] [2023-11-26 11:58:00,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:00,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:00,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:00,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 11:58:00,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:00,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:00,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:00,981 INFO L124 PetriNetUnfolderBase]: 1339/2719 cut-off events. [2023-11-26 11:58:00,982 INFO L125 PetriNetUnfolderBase]: For 348/354 co-relation queries the response was YES. [2023-11-26 11:58:00,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 2719 events. 1339/2719 cut-off events. For 348/354 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17341 event pairs, 270 based on Foata normal form. 40/2390 useless extension candidates. Maximal degree in co-relation 4929. Up to 1831 conditions per place. [2023-11-26 11:58:01,010 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 103 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2023-11-26 11:58:01,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 576 flow [2023-11-26 11:58:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:58:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:58:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2023-11-26 11:58:01,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799319727891157 [2023-11-26 11:58:01,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 341 transitions. [2023-11-26 11:58:01,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 341 transitions. [2023-11-26 11:58:01,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:01,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 341 transitions. [2023-11-26 11:58:01,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 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 11:58:01,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 11:58:01,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 11:58:01,039 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 208 flow. Second operand 7 states and 341 transitions. [2023-11-26 11:58:01,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 576 flow [2023-11-26 11:58:01,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:58:01,051 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 277 flow [2023-11-26 11:58:01,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2023-11-26 11:58:01,052 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2023-11-26 11:58:01,052 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 277 flow [2023-11-26 11:58:01,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 11:58:01,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:01,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:01,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:58:01,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:01,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2004806454, now seen corresponding path program 1 times [2023-11-26 11:58:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:01,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312870415] [2023-11-26 11:58:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:01,169 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 11:58:01,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312870415] [2023-11-26 11:58:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312870415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:01,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:01,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:58:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110591307] [2023-11-26 11:58:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:01,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2023-11-26 11:58:01,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 11:58:01,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:01,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2023-11-26 11:58:01,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:01,611 INFO L124 PetriNetUnfolderBase]: 1043/2409 cut-off events. [2023-11-26 11:58:01,611 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2023-11-26 11:58:01,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4408 conditions, 2409 events. 1043/2409 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14135 event pairs, 492 based on Foata normal form. 42/2148 useless extension candidates. Maximal degree in co-relation 4398. Up to 899 conditions per place. [2023-11-26 11:58:01,633 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 65 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-11-26 11:58:01,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 374 flow [2023-11-26 11:58:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:01,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:58:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-11-26 11:58:01,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2023-11-26 11:58:01,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-11-26 11:58:01,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-11-26 11:58:01,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:01,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-11-26 11:58:01,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 11:58:01,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:58:01,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:58:01,638 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 277 flow. Second operand 3 states and 177 transitions. [2023-11-26 11:58:01,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 374 flow [2023-11-26 11:58:01,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 339 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-26 11:58:01,647 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 169 flow [2023-11-26 11:58:01,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2023-11-26 11:58:01,649 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2023-11-26 11:58:01,649 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 169 flow [2023-11-26 11:58:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 11:58:01,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:01,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:01,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:58:01,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:01,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1821318727, now seen corresponding path program 1 times [2023-11-26 11:58:01,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:01,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145672050] [2023-11-26 11:58:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:01,740 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 11:58:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:01,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145672050] [2023-11-26 11:58:01,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145672050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:01,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408639449] [2023-11-26 11:58:01,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:01,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:01,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:01,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:01,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:01,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2023-11-26 11:58:01,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 11:58:01,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:01,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2023-11-26 11:58:01,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:02,484 INFO L124 PetriNetUnfolderBase]: 1927/4229 cut-off events. [2023-11-26 11:58:02,484 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-11-26 11:58:02,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 4229 events. 1927/4229 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 27643 event pairs, 974 based on Foata normal form. 142/3844 useless extension candidates. Maximal degree in co-relation 7552. Up to 2020 conditions per place. [2023-11-26 11:58:02,522 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 115 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2023-11-26 11:58:02,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 146 transitions, 562 flow [2023-11-26 11:58:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2023-11-26 11:58:02,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7559523809523809 [2023-11-26 11:58:02,525 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 254 transitions. [2023-11-26 11:58:02,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 254 transitions. [2023-11-26 11:58:02,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:02,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 254 transitions. [2023-11-26 11:58:02,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 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 11:58:02,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:02,528 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:02,528 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 169 flow. Second operand 4 states and 254 transitions. [2023-11-26 11:58:02,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 146 transitions, 562 flow [2023-11-26 11:58:02,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 146 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:58:02,535 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 190 flow [2023-11-26 11:58:02,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2023-11-26 11:58:02,539 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-11-26 11:58:02,539 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 190 flow [2023-11-26 11:58:02,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 11:58:02,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:02,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:02,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:58:02,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:02,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash 455651052, now seen corresponding path program 1 times [2023-11-26 11:58:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:02,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417517923] [2023-11-26 11:58:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:02,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:03,380 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 11:58:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417517923] [2023-11-26 11:58:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417517923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:03,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:58:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560789661] [2023-11-26 11:58:03,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:58:03,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:58:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:58:03,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2023-11-26 11:58:03,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 190 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 11:58:03,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:03,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2023-11-26 11:58:03,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:04,025 INFO L124 PetriNetUnfolderBase]: 1751/3940 cut-off events. [2023-11-26 11:58:04,025 INFO L125 PetriNetUnfolderBase]: For 808/932 co-relation queries the response was YES. [2023-11-26 11:58:04,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7532 conditions, 3940 events. 1751/3940 cut-off events. For 808/932 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 25671 event pairs, 289 based on Foata normal form. 0/3492 useless extension candidates. Maximal degree in co-relation 7524. Up to 2477 conditions per place. [2023-11-26 11:58:04,062 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 75 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2023-11-26 11:58:04,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 468 flow [2023-11-26 11:58:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:58:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:58:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2023-11-26 11:58:04,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-26 11:58:04,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 252 transitions. [2023-11-26 11:58:04,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 252 transitions. [2023-11-26 11:58:04,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:04,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 252 transitions. [2023-11-26 11:58:04,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 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 11:58:04,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 11:58:04,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 11:58:04,068 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 190 flow. Second operand 5 states and 252 transitions. [2023-11-26 11:58:04,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 468 flow [2023-11-26 11:58:04,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:58:04,072 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 196 flow [2023-11-26 11:58:04,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2023-11-26 11:58:04,074 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-11-26 11:58:04,074 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 196 flow [2023-11-26 11:58:04,074 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 11:58:04,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:04,075 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:04,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:58:04,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:04,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1773629295, now seen corresponding path program 1 times [2023-11-26 11:58:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369534220] [2023-11-26 11:58:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:04,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:04,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369534220] [2023-11-26 11:58:04,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369534220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:04,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947317954] [2023-11-26 11:58:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:04,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:04,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:04,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:04,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:58:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:04,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:58:04,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:04,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:04,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947317954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:04,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:04,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:58:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131354185] [2023-11-26 11:58:04,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:04,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:58:04,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:04,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:58:04,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:58:04,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2023-11-26 11:58:04,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 11:58:04,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:04,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2023-11-26 11:58:04,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:05,267 INFO L124 PetriNetUnfolderBase]: 1719/3756 cut-off events. [2023-11-26 11:58:05,267 INFO L125 PetriNetUnfolderBase]: For 511/511 co-relation queries the response was YES. [2023-11-26 11:58:05,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 3756 events. 1719/3756 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 24051 event pairs, 96 based on Foata normal form. 72/3468 useless extension candidates. Maximal degree in co-relation 7417. Up to 1108 conditions per place. [2023-11-26 11:58:05,303 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 167 selfloop transitions, 5 changer transitions 0/200 dead transitions. [2023-11-26 11:58:05,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 200 transitions, 840 flow [2023-11-26 11:58:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:58:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:58:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 372 transitions. [2023-11-26 11:58:05,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2023-11-26 11:58:05,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 372 transitions. [2023-11-26 11:58:05,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 372 transitions. [2023-11-26 11:58:05,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:05,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 372 transitions. [2023-11-26 11:58:05,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.0) internal successors, (372), 6 states have internal predecessors, (372), 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 11:58:05,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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 11:58:05,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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 11:58:05,309 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 196 flow. Second operand 6 states and 372 transitions. [2023-11-26 11:58:05,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 200 transitions, 840 flow [2023-11-26 11:58:05,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 200 transitions, 798 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:58:05,319 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 192 flow [2023-11-26 11:58:05,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2023-11-26 11:58:05,322 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-11-26 11:58:05,323 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 192 flow [2023-11-26 11:58:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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 11:58:05,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:05,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:05,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:58:05,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:05,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:05,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1717012946, now seen corresponding path program 1 times [2023-11-26 11:58:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693461178] [2023-11-26 11:58:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:06,340 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 11:58:06,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693461178] [2023-11-26 11:58:06,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693461178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:06,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:06,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:58:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093948288] [2023-11-26 11:58:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:06,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:58:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:58:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:58:06,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:06,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 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 11:58:06,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:06,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:06,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:07,203 INFO L124 PetriNetUnfolderBase]: 2130/4535 cut-off events. [2023-11-26 11:58:07,204 INFO L125 PetriNetUnfolderBase]: For 1892/1960 co-relation queries the response was YES. [2023-11-26 11:58:07,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9295 conditions, 4535 events. 2130/4535 cut-off events. For 1892/1960 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 29697 event pairs, 421 based on Foata normal form. 22/4060 useless extension candidates. Maximal degree in co-relation 9287. Up to 2157 conditions per place. [2023-11-26 11:58:07,240 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 113 selfloop transitions, 7 changer transitions 0/147 dead transitions. [2023-11-26 11:58:07,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 147 transitions, 709 flow [2023-11-26 11:58:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:58:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:58:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 332 transitions. [2023-11-26 11:58:07,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2023-11-26 11:58:07,243 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 332 transitions. [2023-11-26 11:58:07,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 332 transitions. [2023-11-26 11:58:07,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:07,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 332 transitions. [2023-11-26 11:58:07,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 47.42857142857143) internal successors, (332), 7 states have internal predecessors, (332), 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 11:58:07,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 11:58:07,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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 11:58:07,247 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 192 flow. Second operand 7 states and 332 transitions. [2023-11-26 11:58:07,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 147 transitions, 709 flow [2023-11-26 11:58:07,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 147 transitions, 679 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:07,253 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 223 flow [2023-11-26 11:58:07,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=223, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2023-11-26 11:58:07,255 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2023-11-26 11:58:07,255 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 223 flow [2023-11-26 11:58:07,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 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 11:58:07,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:07,256 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:07,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:58:07,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:07,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:07,257 INFO L85 PathProgramCache]: Analyzing trace with hash -852065864, now seen corresponding path program 1 times [2023-11-26 11:58:07,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:07,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470430440] [2023-11-26 11:58:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:07,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:58:07,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:07,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470430440] [2023-11-26 11:58:07,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470430440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:07,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:07,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258285123] [2023-11-26 11:58:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:07,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:07,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:07,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2023-11-26 11:58:07,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 11:58:07,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:07,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2023-11-26 11:58:07,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:08,063 INFO L124 PetriNetUnfolderBase]: 2045/4344 cut-off events. [2023-11-26 11:58:08,063 INFO L125 PetriNetUnfolderBase]: For 1367/1459 co-relation queries the response was YES. [2023-11-26 11:58:08,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9054 conditions, 4344 events. 2045/4344 cut-off events. For 1367/1459 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 28319 event pairs, 356 based on Foata normal form. 124/4148 useless extension candidates. Maximal degree in co-relation 9044. Up to 2053 conditions per place. [2023-11-26 11:58:08,097 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 101 selfloop transitions, 6 changer transitions 6/141 dead transitions. [2023-11-26 11:58:08,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 141 transitions, 619 flow [2023-11-26 11:58:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2023-11-26 11:58:08,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2023-11-26 11:58:08,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 235 transitions. [2023-11-26 11:58:08,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 235 transitions. [2023-11-26 11:58:08,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:08,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 235 transitions. [2023-11-26 11:58:08,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 11:58:08,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:08,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:08,103 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 223 flow. Second operand 4 states and 235 transitions. [2023-11-26 11:58:08,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 141 transitions, 619 flow [2023-11-26 11:58:08,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 141 transitions, 599 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:58:08,113 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 225 flow [2023-11-26 11:58:08,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2023-11-26 11:58:08,114 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2023-11-26 11:58:08,114 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 225 flow [2023-11-26 11:58:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 11:58:08,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:08,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:08,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:58:08,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:08,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1687792969, now seen corresponding path program 1 times [2023-11-26 11:58:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:08,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169363995] [2023-11-26 11:58:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:09,121 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 11:58:09,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:09,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169363995] [2023-11-26 11:58:09,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169363995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:09,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:09,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:58:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754303594] [2023-11-26 11:58:09,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:09,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:58:09,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:58:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:58:09,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 84 [2023-11-26 11:58:09,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 225 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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 11:58:09,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:09,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 84 [2023-11-26 11:58:09,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:10,174 INFO L124 PetriNetUnfolderBase]: 2266/4729 cut-off events. [2023-11-26 11:58:10,174 INFO L125 PetriNetUnfolderBase]: For 2945/2945 co-relation queries the response was YES. [2023-11-26 11:58:10,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 4729 events. 2266/4729 cut-off events. For 2945/2945 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 30866 event pairs, 461 based on Foata normal form. 22/4337 useless extension candidates. Maximal degree in co-relation 10431. Up to 2509 conditions per place. [2023-11-26 11:58:10,214 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 130 selfloop transitions, 8 changer transitions 3/166 dead transitions. [2023-11-26 11:58:10,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 166 transitions, 898 flow [2023-11-26 11:58:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:58:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:58:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 377 transitions. [2023-11-26 11:58:10,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49867724867724866 [2023-11-26 11:58:10,217 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 377 transitions. [2023-11-26 11:58:10,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 377 transitions. [2023-11-26 11:58:10,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:10,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 377 transitions. [2023-11-26 11:58:10,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.888888888888886) internal successors, (377), 9 states have internal predecessors, (377), 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 11:58:10,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 11:58:10,223 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 11:58:10,223 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 225 flow. Second operand 9 states and 377 transitions. [2023-11-26 11:58:10,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 166 transitions, 898 flow [2023-11-26 11:58:10,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 166 transitions, 838 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:10,232 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 226 flow [2023-11-26 11:58:10,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=226, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2023-11-26 11:58:10,234 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2023-11-26 11:58:10,234 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 226 flow [2023-11-26 11:58:10,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 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 11:58:10,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:10,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:10,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:58:10,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:10,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash -782005455, now seen corresponding path program 1 times [2023-11-26 11:58:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340727753] [2023-11-26 11:58:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:10,307 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 11:58:10,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:10,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340727753] [2023-11-26 11:58:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340727753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174912572] [2023-11-26 11:58:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:10,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:10,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:10,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 11:58:10,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:10,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:10,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:11,213 INFO L124 PetriNetUnfolderBase]: 2871/5890 cut-off events. [2023-11-26 11:58:11,213 INFO L125 PetriNetUnfolderBase]: For 2606/2616 co-relation queries the response was YES. [2023-11-26 11:58:11,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12896 conditions, 5890 events. 2871/5890 cut-off events. For 2606/2616 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 40529 event pairs, 1566 based on Foata normal form. 144/5646 useless extension candidates. Maximal degree in co-relation 12885. Up to 3704 conditions per place. [2023-11-26 11:58:11,262 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 93 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2023-11-26 11:58:11,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 575 flow [2023-11-26 11:58:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2023-11-26 11:58:11,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2023-11-26 11:58:11,265 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 220 transitions. [2023-11-26 11:58:11,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 220 transitions. [2023-11-26 11:58:11,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:11,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 220 transitions. [2023-11-26 11:58:11,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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 11:58:11,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:11,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:11,270 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 226 flow. Second operand 4 states and 220 transitions. [2023-11-26 11:58:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 575 flow [2023-11-26 11:58:11,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 121 transitions, 559 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:58:11,278 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 241 flow [2023-11-26 11:58:11,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2023-11-26 11:58:11,280 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2023-11-26 11:58:11,280 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 241 flow [2023-11-26 11:58:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 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 11:58:11,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:11,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:11,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:58:11,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:11,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1528620540, now seen corresponding path program 1 times [2023-11-26 11:58:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131346132] [2023-11-26 11:58:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:11,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:12,111 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 11:58:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131346132] [2023-11-26 11:58:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131346132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:12,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:58:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316726958] [2023-11-26 11:58:12,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:58:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:58:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:58:12,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:12,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 241 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 11:58:12,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:12,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:12,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:13,237 INFO L124 PetriNetUnfolderBase]: 2868/6013 cut-off events. [2023-11-26 11:58:13,237 INFO L125 PetriNetUnfolderBase]: For 2611/2677 co-relation queries the response was YES. [2023-11-26 11:58:13,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13646 conditions, 6013 events. 2868/6013 cut-off events. For 2611/2677 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 42012 event pairs, 501 based on Foata normal form. 44/5683 useless extension candidates. Maximal degree in co-relation 13632. Up to 2591 conditions per place. [2023-11-26 11:58:13,299 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 148 selfloop transitions, 14 changer transitions 3/192 dead transitions. [2023-11-26 11:58:13,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 192 transitions, 1005 flow [2023-11-26 11:58:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:58:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:58:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 463 transitions. [2023-11-26 11:58:13,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511904761904762 [2023-11-26 11:58:13,302 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 463 transitions. [2023-11-26 11:58:13,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 463 transitions. [2023-11-26 11:58:13,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:13,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 463 transitions. [2023-11-26 11:58:13,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.3) internal successors, (463), 10 states have internal predecessors, (463), 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 11:58:13,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 11:58:13,307 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 11:58:13,307 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 241 flow. Second operand 10 states and 463 transitions. [2023-11-26 11:58:13,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 192 transitions, 1005 flow [2023-11-26 11:58:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 192 transitions, 1002 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:58:13,318 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 312 flow [2023-11-26 11:58:13,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2023-11-26 11:58:13,319 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2023-11-26 11:58:13,319 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 312 flow [2023-11-26 11:58:13,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 11:58:13,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:13,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:13,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:58:13,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:13,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash 142597300, now seen corresponding path program 1 times [2023-11-26 11:58:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766607378] [2023-11-26 11:58:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:13,968 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 11:58:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766607378] [2023-11-26 11:58:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766607378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:13,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:13,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:58:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599729283] [2023-11-26 11:58:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:58:13,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:58:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:58:13,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:13,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 312 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 11:58:13,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:13,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:13,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:15,224 INFO L124 PetriNetUnfolderBase]: 2868/6013 cut-off events. [2023-11-26 11:58:15,224 INFO L125 PetriNetUnfolderBase]: For 3576/3642 co-relation queries the response was YES. [2023-11-26 11:58:15,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14868 conditions, 6013 events. 2868/6013 cut-off events. For 3576/3642 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42002 event pairs, 501 based on Foata normal form. 44/5891 useless extension candidates. Maximal degree in co-relation 14852. Up to 2743 conditions per place. [2023-11-26 11:58:15,274 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 148 selfloop transitions, 14 changer transitions 3/192 dead transitions. [2023-11-26 11:58:15,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 192 transitions, 1067 flow [2023-11-26 11:58:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:58:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:58:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 462 transitions. [2023-11-26 11:58:15,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2023-11-26 11:58:15,277 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 462 transitions. [2023-11-26 11:58:15,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 462 transitions. [2023-11-26 11:58:15,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:15,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 462 transitions. [2023-11-26 11:58:15,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.2) internal successors, (462), 10 states have internal predecessors, (462), 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 11:58:15,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 11:58:15,282 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 11:58:15,282 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 312 flow. Second operand 10 states and 462 transitions. [2023-11-26 11:58:15,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 192 transitions, 1067 flow [2023-11-26 11:58:15,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 192 transitions, 1055 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:58:15,300 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 338 flow [2023-11-26 11:58:15,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2023-11-26 11:58:15,300 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2023-11-26 11:58:15,301 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 338 flow [2023-11-26 11:58:15,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 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 11:58:15,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:15,301 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:15,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:58:15,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:15,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash -338275609, now seen corresponding path program 1 times [2023-11-26 11:58:15,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:15,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651161947] [2023-11-26 11:58:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:15,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:15,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651161947] [2023-11-26 11:58:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651161947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:58:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657519537] [2023-11-26 11:58:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:15,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:58:15,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:58:15,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:58:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:15,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:58:15,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:15,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:15,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657519537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:15,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:58:15,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:58:15,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585649720] [2023-11-26 11:58:15,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:15,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:58:15,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:15,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:58:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:58:15,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:15,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 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 11:58:15,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:15,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:15,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:16,666 INFO L124 PetriNetUnfolderBase]: 2838/5863 cut-off events. [2023-11-26 11:58:16,666 INFO L125 PetriNetUnfolderBase]: For 4316/4316 co-relation queries the response was YES. [2023-11-26 11:58:16,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15156 conditions, 5863 events. 2838/5863 cut-off events. For 4316/4316 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 39986 event pairs, 343 based on Foata normal form. 150/5833 useless extension candidates. Maximal degree in co-relation 15138. Up to 2610 conditions per place. [2023-11-26 11:58:16,762 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 125 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-11-26 11:58:16,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 895 flow [2023-11-26 11:58:16,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:58:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:58:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2023-11-26 11:58:16,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2023-11-26 11:58:16,765 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 303 transitions. [2023-11-26 11:58:16,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 303 transitions. [2023-11-26 11:58:16,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:16,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 303 transitions. [2023-11-26 11:58:16,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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 11:58:16,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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 11:58:16,769 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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 11:58:16,769 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 338 flow. Second operand 6 states and 303 transitions. [2023-11-26 11:58:16,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 895 flow [2023-11-26 11:58:16,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 876 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:58:16,790 INFO L231 Difference]: Finished difference. Result has 104 places, 83 transitions, 326 flow [2023-11-26 11:58:16,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2023-11-26 11:58:16,791 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 26 predicate places. [2023-11-26 11:58:16,791 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 326 flow [2023-11-26 11:58:16,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 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 11:58:16,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:16,792 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:16,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:58:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2288ac-eb23-4a65-b821-6f61e034a9be/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:58:16,999 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:16,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1896608476, now seen corresponding path program 1 times [2023-11-26 11:58:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837455970] [2023-11-26 11:58:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:58:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837455970] [2023-11-26 11:58:17,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837455970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:17,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:17,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:17,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295868738] [2023-11-26 11:58:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:17,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 84 [2023-11-26 11:58:17,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 11:58:17,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:17,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 84 [2023-11-26 11:58:17,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:17,930 INFO L124 PetriNetUnfolderBase]: 2814/5765 cut-off events. [2023-11-26 11:58:17,930 INFO L125 PetriNetUnfolderBase]: For 4559/4579 co-relation queries the response was YES. [2023-11-26 11:58:17,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14984 conditions, 5765 events. 2814/5765 cut-off events. For 4559/4579 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 38844 event pairs, 749 based on Foata normal form. 150/5769 useless extension candidates. Maximal degree in co-relation 14965. Up to 2873 conditions per place. [2023-11-26 11:58:17,989 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 86 selfloop transitions, 6 changer transitions 0/116 dead transitions. [2023-11-26 11:58:17,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 116 transitions, 634 flow [2023-11-26 11:58:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:58:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:58:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2023-11-26 11:58:17,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-11-26 11:58:17,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 200 transitions. [2023-11-26 11:58:17,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 200 transitions. [2023-11-26 11:58:17,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:17,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 200 transitions. [2023-11-26 11:58:17,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 11:58:17,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:17,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 11:58:17,994 INFO L175 Difference]: Start difference. First operand has 104 places, 83 transitions, 326 flow. Second operand 4 states and 200 transitions. [2023-11-26 11:58:17,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 116 transitions, 634 flow [2023-11-26 11:58:18,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 116 transitions, 625 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:58:18,015 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 329 flow [2023-11-26 11:58:18,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2023-11-26 11:58:18,016 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2023-11-26 11:58:18,017 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 329 flow [2023-11-26 11:58:18,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 11:58:18,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:18,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:18,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:58:18,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:18,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash 996337250, now seen corresponding path program 1 times [2023-11-26 11:58:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:18,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789834621] [2023-11-26 11:58:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:18,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:18,171 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 11:58:18,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789834621] [2023-11-26 11:58:18,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789834621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:18,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:18,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712547331] [2023-11-26 11:58:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:18,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:18,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2023-11-26 11:58:18,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 11:58:18,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:18,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2023-11-26 11:58:18,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:18,718 INFO L124 PetriNetUnfolderBase]: 1805/4086 cut-off events. [2023-11-26 11:58:18,718 INFO L125 PetriNetUnfolderBase]: For 4187/4187 co-relation queries the response was YES. [2023-11-26 11:58:18,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11001 conditions, 4086 events. 1805/4086 cut-off events. For 4187/4187 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 26849 event pairs, 535 based on Foata normal form. 172/4174 useless extension candidates. Maximal degree in co-relation 10983. Up to 2016 conditions per place. [2023-11-26 11:58:18,747 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 66 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2023-11-26 11:58:18,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 98 transitions, 543 flow [2023-11-26 11:58:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:58:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2023-11-26 11:58:18,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6626984126984127 [2023-11-26 11:58:18,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions. [2023-11-26 11:58:18,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions. [2023-11-26 11:58:18,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:18,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions. [2023-11-26 11:58:18,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 11:58:18,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:58:18,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:58:18,752 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 329 flow. Second operand 3 states and 167 transitions. [2023-11-26 11:58:18,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 98 transitions, 543 flow [2023-11-26 11:58:18,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 524 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-26 11:58:18,765 INFO L231 Difference]: Finished difference. Result has 102 places, 80 transitions, 311 flow [2023-11-26 11:58:18,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=102, PETRI_TRANSITIONS=80} [2023-11-26 11:58:18,766 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2023-11-26 11:58:18,767 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 80 transitions, 311 flow [2023-11-26 11:58:18,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 11:58:18,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:18,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:18,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:58:18,768 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:18,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1208751908, now seen corresponding path program 1 times [2023-11-26 11:58:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:18,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234924176] [2023-11-26 11:58:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:18,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:19,880 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 11:58:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234924176] [2023-11-26 11:58:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234924176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:19,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:19,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:58:19,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690633473] [2023-11-26 11:58:19,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:19,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:58:19,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:58:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:20,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2023-11-26 11:58:20,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 80 transitions, 311 flow. Second operand has 11 states, 11 states have (on average 28.363636363636363) internal successors, (312), 11 states have internal predecessors, (312), 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 11:58:20,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:20,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2023-11-26 11:58:20,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:21,713 INFO L124 PetriNetUnfolderBase]: 2997/6292 cut-off events. [2023-11-26 11:58:21,713 INFO L125 PetriNetUnfolderBase]: For 5769/5769 co-relation queries the response was YES. [2023-11-26 11:58:21,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17400 conditions, 6292 events. 2997/6292 cut-off events. For 5769/5769 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 43091 event pairs, 259 based on Foata normal form. 74/6204 useless extension candidates. Maximal degree in co-relation 17381. Up to 1771 conditions per place. [2023-11-26 11:58:21,761 INFO L140 encePairwiseOnDemand]: 70/84 looper letters, 214 selfloop transitions, 20 changer transitions 3/257 dead transitions. [2023-11-26 11:58:21,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 257 transitions, 1568 flow [2023-11-26 11:58:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:58:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 11:58:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 612 transitions. [2023-11-26 11:58:21,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2023-11-26 11:58:21,766 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 612 transitions. [2023-11-26 11:58:21,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 612 transitions. [2023-11-26 11:58:21,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:21,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 612 transitions. [2023-11-26 11:58:21,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 38.25) internal successors, (612), 16 states have internal predecessors, (612), 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 11:58:21,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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 11:58:21,773 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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 11:58:21,773 INFO L175 Difference]: Start difference. First operand has 102 places, 80 transitions, 311 flow. Second operand 16 states and 612 transitions. [2023-11-26 11:58:21,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 257 transitions, 1568 flow [2023-11-26 11:58:21,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 257 transitions, 1548 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:58:21,793 INFO L231 Difference]: Finished difference. Result has 122 places, 91 transitions, 430 flow [2023-11-26 11:58:21,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=430, PETRI_PLACES=122, PETRI_TRANSITIONS=91} [2023-11-26 11:58:21,794 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2023-11-26 11:58:21,794 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 91 transitions, 430 flow [2023-11-26 11:58:21,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.363636363636363) internal successors, (312), 11 states have internal predecessors, (312), 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 11:58:21,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:21,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:21,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:58:21,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:21,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1103141497, now seen corresponding path program 1 times [2023-11-26 11:58:21,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467654112] [2023-11-26 11:58:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:22,462 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 11:58:22,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:22,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467654112] [2023-11-26 11:58:22,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467654112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:22,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:22,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:58:22,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370617836] [2023-11-26 11:58:22,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:22,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:58:22,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:58:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:58:22,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:22,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 91 transitions, 430 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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 11:58:22,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:22,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:22,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:23,328 INFO L124 PetriNetUnfolderBase]: 2083/4544 cut-off events. [2023-11-26 11:58:23,328 INFO L125 PetriNetUnfolderBase]: For 5386/5396 co-relation queries the response was YES. [2023-11-26 11:58:23,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12846 conditions, 4544 events. 2083/4544 cut-off events. For 5386/5396 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 29428 event pairs, 361 based on Foata normal form. 36/4496 useless extension candidates. Maximal degree in co-relation 12821. Up to 2217 conditions per place. [2023-11-26 11:58:23,354 INFO L140 encePairwiseOnDemand]: 72/84 looper letters, 128 selfloop transitions, 12 changer transitions 3/168 dead transitions. [2023-11-26 11:58:23,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 168 transitions, 1035 flow [2023-11-26 11:58:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:58:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:58:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2023-11-26 11:58:23,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202380952380953 [2023-11-26 11:58:23,360 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 437 transitions. [2023-11-26 11:58:23,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 437 transitions. [2023-11-26 11:58:23,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:23,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 437 transitions. [2023-11-26 11:58:23,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.7) internal successors, (437), 10 states have internal predecessors, (437), 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 11:58:23,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 11:58:23,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 11:58:23,369 INFO L175 Difference]: Start difference. First operand has 122 places, 91 transitions, 430 flow. Second operand 10 states and 437 transitions. [2023-11-26 11:58:23,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 168 transitions, 1035 flow [2023-11-26 11:58:23,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 168 transitions, 986 flow, removed 8 selfloop flow, removed 14 redundant places. [2023-11-26 11:58:23,391 INFO L231 Difference]: Finished difference. Result has 114 places, 83 transitions, 346 flow [2023-11-26 11:58:23,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=114, PETRI_TRANSITIONS=83} [2023-11-26 11:58:23,392 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2023-11-26 11:58:23,392 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 83 transitions, 346 flow [2023-11-26 11:58:23,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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 11:58:23,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:23,393 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:58:23,393 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:23,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash -929545157, now seen corresponding path program 1 times [2023-11-26 11:58:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:23,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134038601] [2023-11-26 11:58:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134038601] [2023-11-26 11:58:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134038601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617200291] [2023-11-26 11:58:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:58:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:58:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:58:23,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2023-11-26 11:58:23,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 83 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 11:58:23,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:23,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2023-11-26 11:58:23,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:24,092 INFO L124 PetriNetUnfolderBase]: 1729/3896 cut-off events. [2023-11-26 11:58:24,092 INFO L125 PetriNetUnfolderBase]: For 4010/4014 co-relation queries the response was YES. [2023-11-26 11:58:24,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10575 conditions, 3896 events. 1729/3896 cut-off events. For 4010/4014 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 24208 event pairs, 1039 based on Foata normal form. 30/3838 useless extension candidates. Maximal degree in co-relation 10554. Up to 1893 conditions per place. [2023-11-26 11:58:24,125 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 72 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-11-26 11:58:24,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 570 flow [2023-11-26 11:58:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:58:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:58:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2023-11-26 11:58:24,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6626984126984127 [2023-11-26 11:58:24,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions. [2023-11-26 11:58:24,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions. [2023-11-26 11:58:24,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:24,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions. [2023-11-26 11:58:24,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 11:58:24,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:58:24,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 11:58:24,129 INFO L175 Difference]: Start difference. First operand has 114 places, 83 transitions, 346 flow. Second operand 3 states and 167 transitions. [2023-11-26 11:58:24,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 570 flow [2023-11-26 11:58:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 549 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-26 11:58:24,143 INFO L231 Difference]: Finished difference. Result has 109 places, 81 transitions, 324 flow [2023-11-26 11:58:24,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=109, PETRI_TRANSITIONS=81} [2023-11-26 11:58:24,143 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2023-11-26 11:58:24,144 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 81 transitions, 324 flow [2023-11-26 11:58:24,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 11:58:24,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:24,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:24,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:58:24,145 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:24,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash -193820439, now seen corresponding path program 1 times [2023-11-26 11:58:24,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:24,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860986942] [2023-11-26 11:58:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:25,635 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 11:58:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860986942] [2023-11-26 11:58:25,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860986942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:25,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:25,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:58:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240839891] [2023-11-26 11:58:25,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:25,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:58:25,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:58:25,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:25,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2023-11-26 11:58:25,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 81 transitions, 324 flow. Second operand has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 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 11:58:25,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:25,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2023-11-26 11:58:25,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:26,768 INFO L124 PetriNetUnfolderBase]: 1815/3934 cut-off events. [2023-11-26 11:58:26,768 INFO L125 PetriNetUnfolderBase]: For 3918/3918 co-relation queries the response was YES. [2023-11-26 11:58:26,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10718 conditions, 3934 events. 1815/3934 cut-off events. For 3918/3918 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 23737 event pairs, 325 based on Foata normal form. 28/3884 useless extension candidates. Maximal degree in co-relation 10696. Up to 1412 conditions per place. [2023-11-26 11:58:26,805 INFO L140 encePairwiseOnDemand]: 71/84 looper letters, 131 selfloop transitions, 17 changer transitions 10/178 dead transitions. [2023-11-26 11:58:26,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 178 transitions, 1072 flow [2023-11-26 11:58:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:58:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 11:58:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 465 transitions. [2023-11-26 11:58:26,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258241758241758 [2023-11-26 11:58:26,808 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 465 transitions. [2023-11-26 11:58:26,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 465 transitions. [2023-11-26 11:58:26,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:26,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 465 transitions. [2023-11-26 11:58:26,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 35.76923076923077) internal successors, (465), 13 states have internal predecessors, (465), 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 11:58:26,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 11:58:26,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 11:58:26,818 INFO L175 Difference]: Start difference. First operand has 109 places, 81 transitions, 324 flow. Second operand 13 states and 465 transitions. [2023-11-26 11:58:26,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 178 transitions, 1072 flow [2023-11-26 11:58:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 178 transitions, 1066 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:58:26,833 INFO L231 Difference]: Finished difference. Result has 116 places, 79 transitions, 343 flow [2023-11-26 11:58:26,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=343, PETRI_PLACES=116, PETRI_TRANSITIONS=79} [2023-11-26 11:58:26,834 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 38 predicate places. [2023-11-26 11:58:26,834 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 79 transitions, 343 flow [2023-11-26 11:58:26,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 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 11:58:26,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:26,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:26,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:58:26,835 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:26,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:26,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1920731674, now seen corresponding path program 1 times [2023-11-26 11:58:26,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:26,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137270339] [2023-11-26 11:58:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:26,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:28,036 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 11:58:28,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:28,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137270339] [2023-11-26 11:58:28,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137270339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:28,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:28,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:58:28,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577306851] [2023-11-26 11:58:28,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:58:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:58:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:58:28,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 84 [2023-11-26 11:58:28,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 79 transitions, 343 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 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 11:58:28,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:28,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 84 [2023-11-26 11:58:28,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:28,973 INFO L124 PetriNetUnfolderBase]: 1881/4006 cut-off events. [2023-11-26 11:58:28,974 INFO L125 PetriNetUnfolderBase]: For 4263/4265 co-relation queries the response was YES. [2023-11-26 11:58:28,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11172 conditions, 4006 events. 1881/4006 cut-off events. For 4263/4265 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23601 event pairs, 255 based on Foata normal form. 0/3900 useless extension candidates. Maximal degree in co-relation 11150. Up to 833 conditions per place. [2023-11-26 11:58:28,997 INFO L140 encePairwiseOnDemand]: 70/84 looper letters, 146 selfloop transitions, 14 changer transitions 8/190 dead transitions. [2023-11-26 11:58:28,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 190 transitions, 1146 flow [2023-11-26 11:58:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:58:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:58:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 538 transitions. [2023-11-26 11:58:29,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337301587301587 [2023-11-26 11:58:29,010 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 538 transitions. [2023-11-26 11:58:29,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 538 transitions. [2023-11-26 11:58:29,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:29,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 538 transitions. [2023-11-26 11:58:29,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 44.833333333333336) internal successors, (538), 12 states have internal predecessors, (538), 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 11:58:29,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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 11:58:29,017 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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 11:58:29,017 INFO L175 Difference]: Start difference. First operand has 116 places, 79 transitions, 343 flow. Second operand 12 states and 538 transitions. [2023-11-26 11:58:29,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 190 transitions, 1146 flow [2023-11-26 11:58:29,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 190 transitions, 1124 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-26 11:58:29,032 INFO L231 Difference]: Finished difference. Result has 120 places, 83 transitions, 377 flow [2023-11-26 11:58:29,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=377, PETRI_PLACES=120, PETRI_TRANSITIONS=83} [2023-11-26 11:58:29,033 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2023-11-26 11:58:29,034 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 83 transitions, 377 flow [2023-11-26 11:58:29,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 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 11:58:29,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:29,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:29,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:58:29,035 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:29,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:29,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1667822114, now seen corresponding path program 1 times [2023-11-26 11:58:29,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:29,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890853546] [2023-11-26 11:58:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:30,195 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 11:58:30,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:30,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890853546] [2023-11-26 11:58:30,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890853546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:30,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:30,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:58:30,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283842365] [2023-11-26 11:58:30,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:30,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:58:30,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:58:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:30,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 84 [2023-11-26 11:58:30,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 83 transitions, 377 flow. Second operand has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 11:58:30,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:30,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 84 [2023-11-26 11:58:30,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:31,189 INFO L124 PetriNetUnfolderBase]: 1829/3926 cut-off events. [2023-11-26 11:58:31,189 INFO L125 PetriNetUnfolderBase]: For 4436/4438 co-relation queries the response was YES. [2023-11-26 11:58:31,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11230 conditions, 3926 events. 1829/3926 cut-off events. For 4436/4438 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 23108 event pairs, 271 based on Foata normal form. 28/3934 useless extension candidates. Maximal degree in co-relation 11207. Up to 1001 conditions per place. [2023-11-26 11:58:31,211 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 141 selfloop transitions, 14 changer transitions 21/198 dead transitions. [2023-11-26 11:58:31,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 198 transitions, 1227 flow [2023-11-26 11:58:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:58:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 11:58:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 538 transitions. [2023-11-26 11:58:31,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926739926739927 [2023-11-26 11:58:31,213 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 538 transitions. [2023-11-26 11:58:31,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 538 transitions. [2023-11-26 11:58:31,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:31,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 538 transitions. [2023-11-26 11:58:31,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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 11:58:31,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 11:58:31,218 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 11:58:31,218 INFO L175 Difference]: Start difference. First operand has 120 places, 83 transitions, 377 flow. Second operand 13 states and 538 transitions. [2023-11-26 11:58:31,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 198 transitions, 1227 flow [2023-11-26 11:58:31,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 198 transitions, 1213 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 11:58:31,235 INFO L231 Difference]: Finished difference. Result has 126 places, 83 transitions, 395 flow [2023-11-26 11:58:31,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=126, PETRI_TRANSITIONS=83} [2023-11-26 11:58:31,236 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2023-11-26 11:58:31,237 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 83 transitions, 395 flow [2023-11-26 11:58:31,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 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 11:58:31,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:31,237 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:31,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:58:31,238 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:31,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:31,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1776493999, now seen corresponding path program 1 times [2023-11-26 11:58:31,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:31,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632174257] [2023-11-26 11:58:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:31,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:58:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:58:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632174257] [2023-11-26 11:58:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632174257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:32,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:32,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:58:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614947105] [2023-11-26 11:58:32,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:32,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:58:32,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:58:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:58:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:58:32,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2023-11-26 11:58:32,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 83 transitions, 395 flow. Second operand has 11 states, 11 states have (on average 35.09090909090909) internal successors, (386), 11 states have internal predecessors, (386), 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 11:58:32,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:58:32,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2023-11-26 11:58:32,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:58:33,617 INFO L124 PetriNetUnfolderBase]: 1789/3902 cut-off events. [2023-11-26 11:58:33,618 INFO L125 PetriNetUnfolderBase]: For 4697/4699 co-relation queries the response was YES. [2023-11-26 11:58:33,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11338 conditions, 3902 events. 1789/3902 cut-off events. For 4697/4699 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 22978 event pairs, 263 based on Foata normal form. 28/3910 useless extension candidates. Maximal degree in co-relation 11313. Up to 951 conditions per place. [2023-11-26 11:58:33,651 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 140 selfloop transitions, 15 changer transitions 22/201 dead transitions. [2023-11-26 11:58:33,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 201 transitions, 1267 flow [2023-11-26 11:58:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:58:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 11:58:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 563 transitions. [2023-11-26 11:58:33,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155677655677655 [2023-11-26 11:58:33,653 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 563 transitions. [2023-11-26 11:58:33,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 563 transitions. [2023-11-26 11:58:33,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:58:33,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 563 transitions. [2023-11-26 11:58:33,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 43.30769230769231) internal successors, (563), 13 states have internal predecessors, (563), 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 11:58:33,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 11:58:33,659 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 11:58:33,659 INFO L175 Difference]: Start difference. First operand has 126 places, 83 transitions, 395 flow. Second operand 13 states and 563 transitions. [2023-11-26 11:58:33,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 201 transitions, 1267 flow [2023-11-26 11:58:33,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 201 transitions, 1236 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-26 11:58:33,677 INFO L231 Difference]: Finished difference. Result has 128 places, 83 transitions, 402 flow [2023-11-26 11:58:33,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=128, PETRI_TRANSITIONS=83} [2023-11-26 11:58:33,678 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 50 predicate places. [2023-11-26 11:58:33,678 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 83 transitions, 402 flow [2023-11-26 11:58:33,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.09090909090909) internal successors, (386), 11 states have internal predecessors, (386), 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 11:58:33,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:58:33,679 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 11:58:33,680 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-26 11:58:33,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 601356085, now seen corresponding path program 1 times [2023-11-26 11:58:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:58:33,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978479401] [2023-11-26 11:58:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:33,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:58:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat