./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx --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 33726888f4084a4eef0b3c291c9d0f3df5c2ad2aa8559b997fd648ce422ca927 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:08:36,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:08:36,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:08:36,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:08:36,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:08:36,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:08:36,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:08:36,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:08:36,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:08:36,856 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:08:36,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:08:36,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:08:36,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:08:36,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:08:36,860 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:08:36,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:08:36,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:08:36,862 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:08:36,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:08:36,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:08:36,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:08:36,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:08:36,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:08:36,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:08:36,866 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:08:36,866 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:08:36,866 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:08:36,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:08:36,867 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:08:36,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:08:36,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:08:36,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:08:36,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:08:36,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:36,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:08:36,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:08:36,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:08:36,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:08:36,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:08:36,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:08:36,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:08:36,872 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:08:36,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:08:36,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:08:36,873 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_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33726888f4084a4eef0b3c291c9d0f3df5c2ad2aa8559b997fd648ce422ca927 [2023-11-21 22:08:37,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:08:37,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:08:37,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:08:37,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:08:37,213 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:08:37,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-21 22:08:40,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:08:40,610 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:08:40,611 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-21 22:08:40,626 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/data/2a2ed5ffa/ccdd0e722e4743a59ec0c14f5f8a0a84/FLAG30d31b1c2 [2023-11-21 22:08:40,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/data/2a2ed5ffa/ccdd0e722e4743a59ec0c14f5f8a0a84 [2023-11-21 22:08:40,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:08:40,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:08:40,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:40,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:08:40,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:08:40,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:40" (1/1) ... [2023-11-21 22:08:40,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ead8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:40, skipping insertion in model container [2023-11-21 22:08:40,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:40" (1/1) ... [2023-11-21 22:08:40,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:08:41,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:41,115 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:08:41,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:41,243 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:08:41,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41 WrapperNode [2023-11-21 22:08:41,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:41,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:41,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:08:41,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:08:41,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,315 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 87 [2023-11-21 22:08:41,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:41,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:08:41,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:08:41,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:08:41,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,329 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,341 INFO L187 HeapSplitter]: Split 15 memory accesses to 4 slices as follows [2, 1, 5, 7] [2023-11-21 22:08:41,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:08:41,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:08:41,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:08:41,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:08:41,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (1/1) ... [2023-11-21 22:08:41,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:41,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:08:41,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:08:41,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4630a1d9-4130-4d26-8b04-0b491ab51126/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:08:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:08:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:08:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:08:41,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:08:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 22:08:41,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 22:08:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:08:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:08:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:08:41,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:08:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:08:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:08:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:08:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:08:41,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:08:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:08:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:08:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:08:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:08:41,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:08:41,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:08:41,435 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:08:41,601 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:08:41,606 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:08:41,864 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:08:42,034 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:08:42,034 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:08:42,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:42 BoogieIcfgContainer [2023-11-21 22:08:42,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:08:42,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:08:42,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:08:42,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:08:42,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:08:40" (1/3) ... [2023-11-21 22:08:42,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5140bc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:42, skipping insertion in model container [2023-11-21 22:08:42,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:41" (2/3) ... [2023-11-21 22:08:42,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5140bc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:42, skipping insertion in model container [2023-11-21 22:08:42,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:42" (3/3) ... [2023-11-21 22:08:42,045 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2023-11-21 22:08:42,054 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:08:42,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:08:42,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-21 22:08:42,066 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:08:42,111 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:08:42,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 28 transitions, 60 flow [2023-11-21 22:08:42,201 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-11-21 22:08:42,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:08:42,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 4/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-21 22:08:42,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 28 transitions, 60 flow [2023-11-21 22:08:42,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 28 transitions, 60 flow [2023-11-21 22:08:42,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:08:42,253 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;@24af5d22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:08:42,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-21 22:08:42,270 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:08:42,270 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-21 22:08:42,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:08:42,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:42,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:42,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 22:08:42,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:42,278 INFO L85 PathProgramCache]: Analyzing trace with hash 261928680, now seen corresponding path program 1 times [2023-11-21 22:08:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:42,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121955872] [2023-11-21 22:08:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:42,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:42,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121955872] [2023-11-21 22:08:42,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121955872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:42,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217158467] [2023-11-21 22:08:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:42,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:42,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2023-11-21 22:08:42,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:42,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2023-11-21 22:08:42,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:42,900 INFO L124 PetriNetUnfolderBase]: 22/80 cut-off events. [2023-11-21 22:08:42,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:08:42,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 80 events. 22/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 2 based on Foata normal form. 6/80 useless extension candidates. Maximal degree in co-relation 120. Up to 38 conditions per place. [2023-11-21 22:08:42,904 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-21 22:08:42,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 86 flow [2023-11-21 22:08:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2023-11-21 22:08:42,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2023-11-21 22:08:42,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 53 transitions. [2023-11-21 22:08:42,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 53 transitions. [2023-11-21 22:08:42,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:42,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 53 transitions. [2023-11-21 22:08:42,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,935 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 60 flow. Second operand 3 states and 53 transitions. [2023-11-21 22:08:42,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 86 flow [2023-11-21 22:08:42,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:08:42,947 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 56 flow [2023-11-21 22:08:42,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-11-21 22:08:42,959 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-21 22:08:42,959 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 56 flow [2023-11-21 22:08:42,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:42,960 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:08:42,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:08:42,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-21 22:08:42,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash -470147096, now seen corresponding path program 1 times [2023-11-21 22:08:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47871031] [2023-11-21 22:08:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:43,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:08:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:43,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:08:43,079 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:08:43,081 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-21 22:08:43,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-21 22:08:43,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-21 22:08:43,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-21 22:08:43,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-21 22:08:43,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-21 22:08:43,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-21 22:08:43,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-21 22:08:43,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-21 22:08:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:08:43,087 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 22:08:43,091 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:08:43,092 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-21 22:08:43,131 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:08:43,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 51 transitions, 112 flow [2023-11-21 22:08:43,157 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2023-11-21 22:08:43,157 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:08:43,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 8/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 157 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2023-11-21 22:08:43,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 51 transitions, 112 flow [2023-11-21 22:08:43,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 51 transitions, 112 flow [2023-11-21 22:08:43,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:08:43,170 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;@24af5d22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:08:43,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 22:08:43,176 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:08:43,176 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-21 22:08:43,176 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:08:43,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:43,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:43,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:08:43,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash 310620081, now seen corresponding path program 1 times [2023-11-21 22:08:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361477887] [2023-11-21 22:08:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:43,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361477887] [2023-11-21 22:08:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361477887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:43,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:43,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839514629] [2023-11-21 22:08:43,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:43,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2023-11-21 22:08:43,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:43,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2023-11-21 22:08:43,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:43,543 INFO L124 PetriNetUnfolderBase]: 421/977 cut-off events. [2023-11-21 22:08:43,543 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-21 22:08:43,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 977 events. 421/977 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6020 event pairs, 54 based on Foata normal form. 108/1004 useless extension candidates. Maximal degree in co-relation 1348. Up to 517 conditions per place. [2023-11-21 22:08:43,557 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 31 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-21 22:08:43,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 193 flow [2023-11-21 22:08:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2023-11-21 22:08:43,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2023-11-21 22:08:43,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2023-11-21 22:08:43,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2023-11-21 22:08:43,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:43,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2023-11-21 22:08:43,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,565 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 112 flow. Second operand 3 states and 111 transitions. [2023-11-21 22:08:43,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 193 flow [2023-11-21 22:08:43,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:08:43,568 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 104 flow [2023-11-21 22:08:43,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-21 22:08:43,569 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2023-11-21 22:08:43,570 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 104 flow [2023-11-21 22:08:43,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:43,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:08:43,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:08:43,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:08:43,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1039288282, now seen corresponding path program 1 times [2023-11-21 22:08:43,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:43,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792196524] [2023-11-21 22:08:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:43,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:43,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792196524] [2023-11-21 22:08:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792196524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:43,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:43,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671481665] [2023-11-21 22:08:43,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:43,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:43,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:43,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:43,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2023-11-21 22:08:43,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:43,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2023-11-21 22:08:43,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:43,820 INFO L124 PetriNetUnfolderBase]: 372/856 cut-off events. [2023-11-21 22:08:43,821 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-21 22:08:43,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 856 events. 372/856 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4952 event pairs, 126 based on Foata normal form. 27/799 useless extension candidates. Maximal degree in co-relation 1292. Up to 447 conditions per place. [2023-11-21 22:08:43,830 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-21 22:08:43,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 193 flow [2023-11-21 22:08:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-21 22:08:43,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-21 22:08:43,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-21 22:08:43,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-21 22:08:43,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:43,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-21 22:08:43,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,847 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 104 flow. Second operand 3 states and 102 transitions. [2023-11-21 22:08:43,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 193 flow [2023-11-21 22:08:43,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:43,870 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 102 flow [2023-11-21 22:08:43,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-21 22:08:43,871 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-11-21 22:08:43,871 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 102 flow [2023-11-21 22:08:43,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:43,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:43,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:08:43,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:08:43,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1994103060, now seen corresponding path program 1 times [2023-11-21 22:08:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933784639] [2023-11-21 22:08:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:08:44,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:44,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933784639] [2023-11-21 22:08:44,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933784639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:44,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:44,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:44,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104658194] [2023-11-21 22:08:44,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:44,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:44,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:44,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:44,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2023-11-21 22:08:44,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:44,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2023-11-21 22:08:44,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:44,203 INFO L124 PetriNetUnfolderBase]: 412/937 cut-off events. [2023-11-21 22:08:44,204 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-21 22:08:44,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 937 events. 412/937 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5619 event pairs, 72 based on Foata normal form. 24/889 useless extension candidates. Maximal degree in co-relation 1135. Up to 472 conditions per place. [2023-11-21 22:08:44,213 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-21 22:08:44,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 188 flow [2023-11-21 22:08:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-21 22:08:44,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-21 22:08:44,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-21 22:08:44,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-21 22:08:44,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:44,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-21 22:08:44,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,218 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 102 flow. Second operand 3 states and 102 transitions. [2023-11-21 22:08:44,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 188 flow [2023-11-21 22:08:44,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:44,221 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 100 flow [2023-11-21 22:08:44,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-11-21 22:08:44,222 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-11-21 22:08:44,222 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 100 flow [2023-11-21 22:08:44,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:44,223 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-21 22:08:44,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:08:44,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-21 22:08:44,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1687654227, now seen corresponding path program 1 times [2023-11-21 22:08:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:44,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909173535] [2023-11-21 22:08:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:44,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:08:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:44,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:08:44,268 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:08:44,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-21 22:08:44,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-21 22:08:44,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-21 22:08:44,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-21 22:08:44,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-21 22:08:44,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-21 22:08:44,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-21 22:08:44,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-21 22:08:44,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-21 22:08:44,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-21 22:08:44,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-21 22:08:44,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-21 22:08:44,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-21 22:08:44,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:08:44,273 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:08:44,274 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:08:44,274 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-21 22:08:44,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:08:44,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 74 transitions, 166 flow [2023-11-21 22:08:44,347 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2023-11-21 22:08:44,347 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:08:44,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 12/82 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 268 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2023-11-21 22:08:44,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 74 transitions, 166 flow [2023-11-21 22:08:44,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 74 transitions, 166 flow [2023-11-21 22:08:44,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:08:44,357 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;@24af5d22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:08:44,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-21 22:08:44,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:08:44,360 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-21 22:08:44,360 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:08:44,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:44,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:44,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:44,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:44,362 INFO L85 PathProgramCache]: Analyzing trace with hash 381259793, now seen corresponding path program 1 times [2023-11-21 22:08:44,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:44,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055786864] [2023-11-21 22:08:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:44,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:44,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:44,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055786864] [2023-11-21 22:08:44,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055786864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:44,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:44,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483025041] [2023-11-21 22:08:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:44,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:44,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:44,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2023-11-21 22:08:44,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:44,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2023-11-21 22:08:44,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:45,766 INFO L124 PetriNetUnfolderBase]: 5317/9887 cut-off events. [2023-11-21 22:08:45,767 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2023-11-21 22:08:45,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17250 conditions, 9887 events. 5317/9887 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 81000 event pairs, 806 based on Foata normal form. 1648/10785 useless extension candidates. Maximal degree in co-relation 6526. Up to 5693 conditions per place. [2023-11-21 22:08:45,884 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 49 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-21 22:08:45,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 304 flow [2023-11-21 22:08:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-21 22:08:45,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7612612612612613 [2023-11-21 22:08:45,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-21 22:08:45,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-21 22:08:45,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:45,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-21 22:08:45,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:45,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:45,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:45,891 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 166 flow. Second operand 3 states and 169 transitions. [2023-11-21 22:08:45,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 304 flow [2023-11-21 22:08:45,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 300 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-21 22:08:45,895 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 152 flow [2023-11-21 22:08:45,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-11-21 22:08:45,897 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2023-11-21 22:08:45,897 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 152 flow [2023-11-21 22:08:45,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:45,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:45,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:08:45,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:08:45,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:45,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1065847868, now seen corresponding path program 1 times [2023-11-21 22:08:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:45,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580967282] [2023-11-21 22:08:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:45,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:45,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580967282] [2023-11-21 22:08:45,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580967282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:45,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:45,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:45,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482563772] [2023-11-21 22:08:45,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:45,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:45,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:45,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:45,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2023-11-21 22:08:45,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:45,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:45,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2023-11-21 22:08:45,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:47,205 INFO L124 PetriNetUnfolderBase]: 4673/8583 cut-off events. [2023-11-21 22:08:47,206 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2023-11-21 22:08:47,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15504 conditions, 8583 events. 4673/8583 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 66680 event pairs, 2186 based on Foata normal form. 219/7992 useless extension candidates. Maximal degree in co-relation 15157. Up to 4911 conditions per place. [2023-11-21 22:08:47,289 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-11-21 22:08:47,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 300 flow [2023-11-21 22:08:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-11-21 22:08:47,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-21 22:08:47,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-11-21 22:08:47,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-11-21 22:08:47,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:47,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-11-21 22:08:47,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,296 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 152 flow. Second operand 3 states and 156 transitions. [2023-11-21 22:08:47,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 300 flow [2023-11-21 22:08:47,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:47,302 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 150 flow [2023-11-21 22:08:47,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-11-21 22:08:47,303 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-11-21 22:08:47,303 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 150 flow [2023-11-21 22:08:47,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:47,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:47,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:08:47,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:47,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2100321876, now seen corresponding path program 1 times [2023-11-21 22:08:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085809357] [2023-11-21 22:08:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:08:47,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:47,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085809357] [2023-11-21 22:08:47,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085809357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:47,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:47,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:47,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531092314] [2023-11-21 22:08:47,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:47,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:47,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:47,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2023-11-21 22:08:47,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:47,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2023-11-21 22:08:47,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:48,740 INFO L124 PetriNetUnfolderBase]: 5318/9839 cut-off events. [2023-11-21 22:08:48,740 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2023-11-21 22:08:48,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17614 conditions, 9839 events. 5318/9839 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 79921 event pairs, 824 based on Foata normal form. 216/9352 useless extension candidates. Maximal degree in co-relation 12882. Up to 5648 conditions per place. [2023-11-21 22:08:48,817 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-21 22:08:48,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 295 flow [2023-11-21 22:08:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-11-21 22:08:48,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2023-11-21 22:08:48,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-11-21 22:08:48,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-11-21 22:08:48,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:48,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-11-21 22:08:48,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:48,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:48,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:48,825 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 150 flow. Second operand 3 states and 156 transitions. [2023-11-21 22:08:48,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 295 flow [2023-11-21 22:08:48,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:48,834 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 148 flow [2023-11-21 22:08:48,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2023-11-21 22:08:48,837 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2023-11-21 22:08:48,838 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 148 flow [2023-11-21 22:08:48,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:48,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:48,838 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:48,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:08:48,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:48,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -685468257, now seen corresponding path program 1 times [2023-11-21 22:08:48,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:48,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871176774] [2023-11-21 22:08:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:48,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:08:48,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871176774] [2023-11-21 22:08:48,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871176774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:48,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:48,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:48,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165633186] [2023-11-21 22:08:48,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:48,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:48,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:48,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2023-11-21 22:08:48,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:48,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:48,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2023-11-21 22:08:48,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:50,186 INFO L124 PetriNetUnfolderBase]: 4716/8661 cut-off events. [2023-11-21 22:08:50,187 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2023-11-21 22:08:50,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 8661 events. 4716/8661 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 67336 event pairs, 1400 based on Foata normal form. 216/8150 useless extension candidates. Maximal degree in co-relation 7276. Up to 4872 conditions per place. [2023-11-21 22:08:50,271 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 47 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-11-21 22:08:50,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 287 flow [2023-11-21 22:08:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-21 22:08:50,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2023-11-21 22:08:50,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-21 22:08:50,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-21 22:08:50,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:50,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-21 22:08:50,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:50,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:50,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:50,279 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 148 flow. Second operand 3 states and 155 transitions. [2023-11-21 22:08:50,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 287 flow [2023-11-21 22:08:50,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:50,286 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 146 flow [2023-11-21 22:08:50,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-11-21 22:08:50,288 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-21 22:08:50,289 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 146 flow [2023-11-21 22:08:50,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:50,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:50,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:08:50,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:50,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 19820760, now seen corresponding path program 1 times [2023-11-21 22:08:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514779301] [2023-11-21 22:08:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:50,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514779301] [2023-11-21 22:08:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514779301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:50,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:08:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217169533] [2023-11-21 22:08:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:50,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:08:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:08:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:08:50,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2023-11-21 22:08:50,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 146 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) [2023-11-21 22:08:50,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:50,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2023-11-21 22:08:50,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:51,677 INFO L124 PetriNetUnfolderBase]: 5212/9269 cut-off events. [2023-11-21 22:08:51,678 INFO L125 PetriNetUnfolderBase]: For 743/743 co-relation queries the response was YES. [2023-11-21 22:08:51,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17047 conditions, 9269 events. 5212/9269 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 71621 event pairs, 1880 based on Foata normal form. 219/8564 useless extension candidates. Maximal degree in co-relation 16694. Up to 4129 conditions per place. [2023-11-21 22:08:51,764 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 67 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2023-11-21 22:08:51,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 394 flow [2023-11-21 22:08:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:08:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:08:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2023-11-21 22:08:51,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2023-11-21 22:08:51,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 212 transitions. [2023-11-21 22:08:51,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 212 transitions. [2023-11-21 22:08:51,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:51,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 212 transitions. [2023-11-21 22:08:51,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:51,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:51,770 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:51,771 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 146 flow. Second operand 4 states and 212 transitions. [2023-11-21 22:08:51,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 394 flow [2023-11-21 22:08:51,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:51,788 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 148 flow [2023-11-21 22:08:51,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-11-21 22:08:51,789 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-21 22:08:51,790 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 148 flow [2023-11-21 22:08:51,790 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) [2023-11-21 22:08:51,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:51,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:51,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:08:51,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:51,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 614444012, now seen corresponding path program 1 times [2023-11-21 22:08:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:51,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384386318] [2023-11-21 22:08:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384386318] [2023-11-21 22:08:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384386318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:08:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206064854] [2023-11-21 22:08:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:51,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:08:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:08:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:08:51,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2023-11-21 22:08:51,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 148 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) [2023-11-21 22:08:51,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:51,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2023-11-21 22:08:51,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:53,603 INFO L124 PetriNetUnfolderBase]: 8960/16338 cut-off events. [2023-11-21 22:08:53,604 INFO L125 PetriNetUnfolderBase]: For 1757/1757 co-relation queries the response was YES. [2023-11-21 22:08:53,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30236 conditions, 16338 events. 8960/16338 cut-off events. For 1757/1757 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 139700 event pairs, 4390 based on Foata normal form. 219/15180 useless extension candidates. Maximal degree in co-relation 14374. Up to 7261 conditions per place. [2023-11-21 22:08:53,722 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 74 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-11-21 22:08:53,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 109 transitions, 424 flow [2023-11-21 22:08:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:08:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:08:53,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2023-11-21 22:08:53,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7398648648648649 [2023-11-21 22:08:53,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 219 transitions. [2023-11-21 22:08:53,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 219 transitions. [2023-11-21 22:08:53,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:53,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 219 transitions. [2023-11-21 22:08:53,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:53,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:53,728 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:53,728 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 148 flow. Second operand 4 states and 219 transitions. [2023-11-21 22:08:53,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 109 transitions, 424 flow [2023-11-21 22:08:53,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:08:53,781 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 167 flow [2023-11-21 22:08:53,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-11-21 22:08:53,782 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-11-21 22:08:53,783 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 167 flow [2023-11-21 22:08:53,783 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) [2023-11-21 22:08:53,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:53,783 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:53,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:08:53,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:53,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:53,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1648730318, now seen corresponding path program 1 times [2023-11-21 22:08:53,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:53,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510862411] [2023-11-21 22:08:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:53,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:08:53,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:53,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510862411] [2023-11-21 22:08:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510862411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:53,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536925811] [2023-11-21 22:08:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:53,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:53,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2023-11-21 22:08:53,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:53,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:53,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2023-11-21 22:08:53,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:55,271 INFO L124 PetriNetUnfolderBase]: 9386/17031 cut-off events. [2023-11-21 22:08:55,271 INFO L125 PetriNetUnfolderBase]: For 3112/3256 co-relation queries the response was YES. [2023-11-21 22:08:55,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32350 conditions, 17031 events. 9386/17031 cut-off events. For 3112/3256 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 145868 event pairs, 1970 based on Foata normal form. 336/16228 useless extension candidates. Maximal degree in co-relation 18871. Up to 9128 conditions per place. [2023-11-21 22:08:55,390 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 53 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-11-21 22:08:55,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 336 flow [2023-11-21 22:08:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-21 22:08:55,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2023-11-21 22:08:55,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-21 22:08:55,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-21 22:08:55,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:55,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-21 22:08:55,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,400 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 167 flow. Second operand 3 states and 155 transitions. [2023-11-21 22:08:55,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 336 flow [2023-11-21 22:08:55,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:08:55,405 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 166 flow [2023-11-21 22:08:55,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2023-11-21 22:08:55,406 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-11-21 22:08:55,407 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 166 flow [2023-11-21 22:08:55,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:55,408 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-21 22:08:55,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:08:55,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-21 22:08:55,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash 428966279, now seen corresponding path program 1 times [2023-11-21 22:08:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:55,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728611358] [2023-11-21 22:08:55,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:55,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:08:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:08:55,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:08:55,456 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:08:55,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-21 22:08:55,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-21 22:08:55,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-21 22:08:55,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-21 22:08:55,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-21 22:08:55,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-21 22:08:55,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-21 22:08:55,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-21 22:08:55,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-21 22:08:55,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-21 22:08:55,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-21 22:08:55,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-21 22:08:55,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-21 22:08:55,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-21 22:08:55,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-21 22:08:55,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-21 22:08:55,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-21 22:08:55,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:08:55,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:55,462 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-21 22:08:55,462 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-21 22:08:55,521 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:08:55,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 222 flow [2023-11-21 22:08:55,548 INFO L124 PetriNetUnfolderBase]: 16/108 cut-off events. [2023-11-21 22:08:55,549 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 22:08:55,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 108 events. 16/108 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 369 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 94. Up to 5 conditions per place. [2023-11-21 22:08:55,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 97 transitions, 222 flow [2023-11-21 22:08:55,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 97 transitions, 222 flow [2023-11-21 22:08:55,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:08:55,554 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;@24af5d22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:08:55,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-21 22:08:55,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:08:55,559 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-21 22:08:55,559 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:08:55,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:55,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:55,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-21 22:08:55,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash 473849224, now seen corresponding path program 1 times [2023-11-21 22:08:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747631302] [2023-11-21 22:08:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:55,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:55,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:55,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747631302] [2023-11-21 22:08:55,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747631302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:55,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:55,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:55,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161621705] [2023-11-21 22:08:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:55,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2023-11-21 22:08:55,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:55,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2023-11-21 22:08:55,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:05,612 INFO L124 PetriNetUnfolderBase]: 58261/94975 cut-off events. [2023-11-21 22:09:05,612 INFO L125 PetriNetUnfolderBase]: For 6417/6417 co-relation queries the response was YES. [2023-11-21 22:09:05,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170307 conditions, 94975 events. 58261/94975 cut-off events. For 6417/6417 co-relation queries the response was YES. Maximal size of possible extension queue 4010. Compared 898061 event pairs, 9510 based on Foata normal form. 19220/107997 useless extension candidates. Maximal degree in co-relation 30712. Up to 57853 conditions per place. [2023-11-21 22:09:06,559 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 67 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-21 22:09:06,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 419 flow [2023-11-21 22:09:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-11-21 22:09:06,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7800687285223368 [2023-11-21 22:09:06,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-11-21 22:09:06,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-11-21 22:09:06,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:06,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-11-21 22:09:06,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,566 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 222 flow. Second operand 3 states and 227 transitions. [2023-11-21 22:09:06,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 419 flow [2023-11-21 22:09:06,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 407 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-21 22:09:06,573 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 200 flow [2023-11-21 22:09:06,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2023-11-21 22:09:06,575 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-11-21 22:09:06,575 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 200 flow [2023-11-21 22:09:06,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:06,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:09:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:09:06,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-21 22:09:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1804424612, now seen corresponding path program 1 times [2023-11-21 22:09:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:06,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436932034] [2023-11-21 22:09:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436932034] [2023-11-21 22:09:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436932034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:06,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:06,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:06,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183972483] [2023-11-21 22:09:06,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:06,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:06,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:06,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:06,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:06,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2023-11-21 22:09:06,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:06,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2023-11-21 22:09:06,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:15,045 INFO L124 PetriNetUnfolderBase]: 51232/82657 cut-off events. [2023-11-21 22:09:15,046 INFO L125 PetriNetUnfolderBase]: For 5477/5477 co-relation queries the response was YES. [2023-11-21 22:09:15,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152043 conditions, 82657 events. 51232/82657 cut-off events. For 5477/5477 co-relation queries the response was YES. Maximal size of possible extension queue 3639. Compared 745389 event pairs, 27618 based on Foata normal form. 1755/77563 useless extension candidates. Maximal degree in co-relation 151335. Up to 49839 conditions per place. [2023-11-21 22:09:15,907 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 66 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-11-21 22:09:15,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 407 flow [2023-11-21 22:09:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-11-21 22:09:15,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2023-11-21 22:09:15,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-11-21 22:09:15,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-11-21 22:09:15,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:15,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-11-21 22:09:15,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:15,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:15,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:15,912 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 200 flow. Second operand 3 states and 210 transitions. [2023-11-21 22:09:15,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 407 flow [2023-11-21 22:09:15,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 115 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:15,920 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 198 flow [2023-11-21 22:09:15,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2023-11-21 22:09:15,921 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -1 predicate places. [2023-11-21 22:09:15,921 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 198 flow [2023-11-21 22:09:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:15,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:15,922 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:15,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:09:15,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-21 22:09:15,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1158441684, now seen corresponding path program 1 times [2023-11-21 22:09:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:15,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753137042] [2023-11-21 22:09:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:09:15,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:15,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753137042] [2023-11-21 22:09:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753137042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406957954] [2023-11-21 22:09:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:15,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:15,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2023-11-21 22:09:15,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:15,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:15,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2023-11-21 22:09:15,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:24,937 INFO L124 PetriNetUnfolderBase]: 58310/94949 cut-off events. [2023-11-21 22:09:24,937 INFO L125 PetriNetUnfolderBase]: For 6263/6263 co-relation queries the response was YES. [2023-11-21 22:09:25,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172997 conditions, 94949 events. 58310/94949 cut-off events. For 6263/6263 co-relation queries the response was YES. Maximal size of possible extension queue 4006. Compared 894174 event pairs, 9528 based on Foata normal form. 1752/90653 useless extension candidates. Maximal degree in co-relation 126826. Up to 57808 conditions per place. [2023-11-21 22:09:25,572 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 66 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-11-21 22:09:25,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 113 transitions, 402 flow [2023-11-21 22:09:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-11-21 22:09:25,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2023-11-21 22:09:25,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-11-21 22:09:25,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-11-21 22:09:25,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:25,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-11-21 22:09:25,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:25,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:25,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:25,587 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 198 flow. Second operand 3 states and 210 transitions. [2023-11-21 22:09:25,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 113 transitions, 402 flow [2023-11-21 22:09:25,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 113 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:25,631 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 196 flow [2023-11-21 22:09:25,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2023-11-21 22:09:25,632 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -2 predicate places. [2023-11-21 22:09:25,632 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 196 flow [2023-11-21 22:09:25,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:25,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:25,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:09:25,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-21 22:09:25,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1551953258, now seen corresponding path program 1 times [2023-11-21 22:09:25,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:25,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442943296] [2023-11-21 22:09:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:09:25,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:25,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442943296] [2023-11-21 22:09:25,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442943296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:25,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:25,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:25,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790823305] [2023-11-21 22:09:25,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:25,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:25,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2023-11-21 22:09:25,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:25,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:25,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2023-11-21 22:09:25,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand