./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya --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 52bbaf4aea0b4aa619bc81dd1f1ee11014fb948f7d29769666561e1faf399ae7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:42:52,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:42:52,387 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 05:42:52,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:42:52,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:42:52,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:42:52,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:42:52,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:42:52,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:42:52,421 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:42:52,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:42:52,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:42:52,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:42:52,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:42:52,424 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:42:52,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:42:52,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:42:52,425 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:42:52,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:42:52,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:42:52,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:42:52,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:42:52,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:42:52,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:42:52,430 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:42:52,430 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:42:52,430 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:42:52,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:42:52,431 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:42:52,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:42:52,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:42:52,432 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:42:52,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:42:52,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:42:52,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:42:52,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:42:52,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:42:52,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:42:52,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:42:52,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:42:52,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:42:52,434 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:42:52,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:42:52,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:42:52,435 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_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52bbaf4aea0b4aa619bc81dd1f1ee11014fb948f7d29769666561e1faf399ae7 [2023-11-29 05:42:52,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:42:52,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:42:52,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:42:52,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:42:52,696 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:42:52,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-29 05:42:55,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:42:55,645 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:42:55,645 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-29 05:42:55,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/data/55d3bd733/cea1d591458b41e6b1f086ccf8223e9f/FLAG8750af1ea [2023-11-29 05:42:55,672 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/data/55d3bd733/cea1d591458b41e6b1f086ccf8223e9f [2023-11-29 05:42:55,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:42:55,675 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:42:55,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:42:55,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:42:55,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:42:55,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:42:55" (1/1) ... [2023-11-29 05:42:55,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781ae453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:55, skipping insertion in model container [2023-11-29 05:42:55,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:42:55" (1/1) ... [2023-11-29 05:42:55,731 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:42:56,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:42:56,018 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:42:56,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:42:56,084 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:42:56,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56 WrapperNode [2023-11-29 05:42:56,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:42:56,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:42:56,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:42:56,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:42:56,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,125 INFO L138 Inliner]: procedures = 165, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 93 [2023-11-29 05:42:56,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:42:56,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:42:56,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:42:56,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:42:56,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,156 INFO L175 MemorySlicer]: Split 15 memory accesses to 4 slices as follows [2, 5, 7, 1]. 47 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2023-11-29 05:42:56,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:42:56,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:42:56,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:42:56,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:42:56,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (1/1) ... [2023-11-29 05:42:56,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:42:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:56,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:42:56,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2164c9b5-f39a-4471-baa9-4829170d6b80/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:42:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:42:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:42:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:42:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:42:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 05:42:56,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 05:42:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:42:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:42:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:42:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:42:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 05:42:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:42:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:42:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:42:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:42:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:42:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:42:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:42:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 05:42:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:42:56,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:42:56,250 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:42:56,391 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:42:56,393 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:42:56,575 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:42:56,712 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:42:56,713 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:42:56,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:42:56 BoogieIcfgContainer [2023-11-29 05:42:56,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:42:56,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:42:56,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:42:56,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:42:56,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:42:55" (1/3) ... [2023-11-29 05:42:56,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be5729a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:42:56, skipping insertion in model container [2023-11-29 05:42:56,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:42:56" (2/3) ... [2023-11-29 05:42:56,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be5729a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:42:56, skipping insertion in model container [2023-11-29 05:42:56,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:42:56" (3/3) ... [2023-11-29 05:42:56,721 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2023-11-29 05:42:56,727 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:42:56,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:42:56,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 05:42:56,735 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:42:56,772 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:42:56,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 31 transitions, 66 flow [2023-11-29 05:42:56,825 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-29 05:42:56,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:42:56,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-29 05:42:56,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 31 transitions, 66 flow [2023-11-29 05:42:56,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 66 flow [2023-11-29 05:42:56,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:42:56,847 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;@7963d69b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:42:56,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 05:42:56,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:42:56,853 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-29 05:42:56,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:42:56,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:42:56,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:42:56,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-29 05:42:56,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash 277409973, now seen corresponding path program 1 times [2023-11-29 05:42:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:56,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28235397] [2023-11-29 05:42:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:56,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:57,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:57,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28235397] [2023-11-29 05:42:57,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28235397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:57,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:57,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:42:57,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542934085] [2023-11-29 05:42:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:57,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:42:57,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:42:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:42:57,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2023-11-29 05:42:57,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:42:57,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2023-11-29 05:42:57,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:42:57,298 INFO L124 PetriNetUnfolderBase]: 26/92 cut-off events. [2023-11-29 05:42:57,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:42:57,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 92 events. 26/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 249 event pairs, 2 based on Foata normal form. 6/92 useless extension candidates. Maximal degree in co-relation 143. Up to 48 conditions per place. [2023-11-29 05:42:57,301 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 15 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-29 05:42:57,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 96 flow [2023-11-29 05:42:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:42:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:42:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-29 05:42:57,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2023-11-29 05:42:57,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-29 05:42:57,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-29 05:42:57,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:42:57,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-29 05:42:57,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,321 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 66 flow. Second operand 3 states and 58 transitions. [2023-11-29 05:42:57,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 96 flow [2023-11-29 05:42:57,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:42:57,326 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 62 flow [2023-11-29 05:42:57,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-11-29 05:42:57,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-11-29 05:42:57,332 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 62 flow [2023-11-29 05:42:57,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:42:57,332 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 05:42:57,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:42:57,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-29 05:42:57,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash 9759739, now seen corresponding path program 1 times [2023-11-29 05:42:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:57,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657887448] [2023-11-29 05:42:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:42:57,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:42:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:42:57,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:42:57,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:42:57,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-29 05:42:57,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-29 05:42:57,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-29 05:42:57,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-29 05:42:57,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-29 05:42:57,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-29 05:42:57,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-29 05:42:57,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-29 05:42:57,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-29 05:42:57,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:42:57,401 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 05:42:57,404 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:42:57,404 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 05:42:57,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:42:57,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 57 transitions, 124 flow [2023-11-29 05:42:57,450 INFO L124 PetriNetUnfolderBase]: 8/62 cut-off events. [2023-11-29 05:42:57,451 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:42:57,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 62 events. 8/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 188 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2023-11-29 05:42:57,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 57 transitions, 124 flow [2023-11-29 05:42:57,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 57 transitions, 124 flow [2023-11-29 05:42:57,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:42:57,457 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;@7963d69b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:42:57,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 05:42:57,461 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:42:57,461 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 05:42:57,461 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:42:57,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:42:57,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:42:57,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 05:42:57,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash 331830183, now seen corresponding path program 1 times [2023-11-29 05:42:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012595986] [2023-11-29 05:42:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:57,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012595986] [2023-11-29 05:42:57,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012595986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:57,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:57,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:42:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984225738] [2023-11-29 05:42:57,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:42:57,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:42:57,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:42:57,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-29 05:42:57,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:42:57,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-29 05:42:57,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:42:57,798 INFO L124 PetriNetUnfolderBase]: 623/1392 cut-off events. [2023-11-29 05:42:57,798 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-29 05:42:57,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 1392 events. 623/1392 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8626 event pairs, 68 based on Foata normal form. 132/1431 useless extension candidates. Maximal degree in co-relation 2029. Up to 807 conditions per place. [2023-11-29 05:42:57,813 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 37 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-29 05:42:57,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 221 flow [2023-11-29 05:42:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:42:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:42:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-29 05:42:57,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2023-11-29 05:42:57,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-29 05:42:57,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-29 05:42:57,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:42:57,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-29 05:42:57,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,819 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 124 flow. Second operand 3 states and 123 transitions. [2023-11-29 05:42:57,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 221 flow [2023-11-29 05:42:57,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:42:57,823 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 116 flow [2023-11-29 05:42:57,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-29 05:42:57,824 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-29 05:42:57,824 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 116 flow [2023-11-29 05:42:57,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:42:57,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:42:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:42:57,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 05:42:57,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:57,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1696801470, now seen corresponding path program 1 times [2023-11-29 05:42:57,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:57,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725585374] [2023-11-29 05:42:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:57,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:57,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725585374] [2023-11-29 05:42:57,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725585374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:57,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:57,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:42:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430726869] [2023-11-29 05:42:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:57,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:42:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:42:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:42:57,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-29 05:42:57,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:57,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:42:57,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-29 05:42:57,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:42:58,132 INFO L124 PetriNetUnfolderBase]: 570/1306 cut-off events. [2023-11-29 05:42:58,132 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-29 05:42:58,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 1306 events. 570/1306 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8029 event pairs, 68 based on Foata normal form. 33/1249 useless extension candidates. Maximal degree in co-relation 1929. Up to 721 conditions per place. [2023-11-29 05:42:58,141 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-29 05:42:58,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 221 flow [2023-11-29 05:42:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:42:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:42:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-29 05:42:58,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 05:42:58,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-29 05:42:58,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-29 05:42:58,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:42:58,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-29 05:42:58,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,147 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 116 flow. Second operand 3 states and 114 transitions. [2023-11-29 05:42:58,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 221 flow [2023-11-29 05:42:58,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:42:58,150 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 114 flow [2023-11-29 05:42:58,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-11-29 05:42:58,151 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-11-29 05:42:58,151 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 114 flow [2023-11-29 05:42:58,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:42:58,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:58,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:42:58,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 05:42:58,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1499728769, now seen corresponding path program 1 times [2023-11-29 05:42:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:58,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844379662] [2023-11-29 05:42:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:58,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:42:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844379662] [2023-11-29 05:42:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844379662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:58,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:58,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:42:58,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845791595] [2023-11-29 05:42:58,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:58,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:42:58,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:42:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:42:58,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-29 05:42:58,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:42:58,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-29 05:42:58,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:42:58,406 INFO L124 PetriNetUnfolderBase]: 614/1352 cut-off events. [2023-11-29 05:42:58,406 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-29 05:42:58,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 1352 events. 614/1352 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8241 event pairs, 92 based on Foata normal form. 30/1298 useless extension candidates. Maximal degree in co-relation 1784. Up to 750 conditions per place. [2023-11-29 05:42:58,418 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-29 05:42:58,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 216 flow [2023-11-29 05:42:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:42:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:42:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-29 05:42:58,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 05:42:58,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-29 05:42:58,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-29 05:42:58,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:42:58,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-29 05:42:58,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,422 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 114 flow. Second operand 3 states and 114 transitions. [2023-11-29 05:42:58,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 216 flow [2023-11-29 05:42:58,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:42:58,425 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 112 flow [2023-11-29 05:42:58,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-29 05:42:58,426 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-29 05:42:58,426 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 112 flow [2023-11-29 05:42:58,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:42:58,427 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-29 05:42:58,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:42:58,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 05:42:58,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash 753033667, now seen corresponding path program 1 times [2023-11-29 05:42:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:58,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516004257] [2023-11-29 05:42:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:42:58,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:42:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:42:58,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:42:58,457 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:42:58,457 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-29 05:42:58,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-29 05:42:58,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-29 05:42:58,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-29 05:42:58,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-29 05:42:58,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-29 05:42:58,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-29 05:42:58,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-29 05:42:58,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-29 05:42:58,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-29 05:42:58,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-29 05:42:58,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-29 05:42:58,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-29 05:42:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:42:58,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 05:42:58,460 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:42:58,460 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 05:42:58,497 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:42:58,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 83 transitions, 184 flow [2023-11-29 05:42:58,511 INFO L124 PetriNetUnfolderBase]: 12/91 cut-off events. [2023-11-29 05:42:58,511 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 05:42:58,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 12/91 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-11-29 05:42:58,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 83 transitions, 184 flow [2023-11-29 05:42:58,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 83 transitions, 184 flow [2023-11-29 05:42:58,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:42:58,516 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;@7963d69b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:42:58,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 05:42:58,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:42:58,519 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 05:42:58,519 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:42:58,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:42:58,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:42:58,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:42:58,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash 411061523, now seen corresponding path program 1 times [2023-11-29 05:42:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:58,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716174546] [2023-11-29 05:42:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:42:58,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:58,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716174546] [2023-11-29 05:42:58,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716174546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:58,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:58,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:42:58,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387506194] [2023-11-29 05:42:58,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:58,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:42:58,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:42:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:42:58,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 05:42:58,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:42:58,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:42:58,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 05:42:58,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:00,509 INFO L124 PetriNetUnfolderBase]: 9719/16887 cut-off events. [2023-11-29 05:43:00,509 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2023-11-29 05:43:00,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30526 conditions, 16887 events. 9719/16887 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 134260 event pairs, 5096 based on Foata normal form. 2408/18101 useless extension candidates. Maximal degree in co-relation 22359. Up to 11097 conditions per place. [2023-11-29 05:43:00,649 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 59 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-11-29 05:43:00,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 350 flow [2023-11-29 05:43:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-29 05:43:00,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7550200803212851 [2023-11-29 05:43:00,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-29 05:43:00,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-29 05:43:00,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:00,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-29 05:43:00,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:00,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:00,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:00,655 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 184 flow. Second operand 3 states and 188 transitions. [2023-11-29 05:43:00,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 350 flow [2023-11-29 05:43:00,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 346 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-29 05:43:00,661 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 170 flow [2023-11-29 05:43:00,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-11-29 05:43:00,662 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2023-11-29 05:43:00,662 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 170 flow [2023-11-29 05:43:00,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:00,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:00,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:43:00,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:43:00,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:43:00,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash -141994203, now seen corresponding path program 1 times [2023-11-29 05:43:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:00,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401974608] [2023-11-29 05:43:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:00,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:00,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401974608] [2023-11-29 05:43:00,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401974608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:00,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:00,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:43:00,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321518306] [2023-11-29 05:43:00,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:00,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:00,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:00,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 05:43:00,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:00,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:00,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 05:43:00,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:02,178 INFO L124 PetriNetUnfolderBase]: 8994/16402 cut-off events. [2023-11-29 05:43:02,178 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2023-11-29 05:43:02,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29369 conditions, 16402 events. 8994/16402 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 137279 event pairs, 1268 based on Foata normal form. 333/15739 useless extension candidates. Maximal degree in co-relation 27024. Up to 9901 conditions per place. [2023-11-29 05:43:02,290 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 58 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-29 05:43:02,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 346 flow [2023-11-29 05:43:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-29 05:43:02,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2023-11-29 05:43:02,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-29 05:43:02,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-29 05:43:02,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:02,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-29 05:43:02,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:02,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:02,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:02,295 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 170 flow. Second operand 3 states and 175 transitions. [2023-11-29 05:43:02,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 346 flow [2023-11-29 05:43:02,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:43:02,301 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 168 flow [2023-11-29 05:43:02,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-11-29 05:43:02,302 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-29 05:43:02,303 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 168 flow [2023-11-29 05:43:02,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:02,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:02,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:02,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:43:02,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:43:02,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash 944183711, now seen corresponding path program 1 times [2023-11-29 05:43:02,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:02,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114479213] [2023-11-29 05:43:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:02,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:43:02,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:02,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114479213] [2023-11-29 05:43:02,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114479213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:02,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:02,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:43:02,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186243289] [2023-11-29 05:43:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:02,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:02,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:02,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 05:43:02,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:02,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:02,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 05:43:02,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:03,696 INFO L124 PetriNetUnfolderBase]: 9782/17090 cut-off events. [2023-11-29 05:43:03,696 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES. [2023-11-29 05:43:03,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31343 conditions, 17090 events. 9782/17090 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 136186 event pairs, 2972 based on Foata normal form. 330/16344 useless extension candidates. Maximal degree in co-relation 24466. Up to 11040 conditions per place. [2023-11-29 05:43:03,768 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 58 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-11-29 05:43:03,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 341 flow [2023-11-29 05:43:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-29 05:43:03,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2023-11-29 05:43:03,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-29 05:43:03,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-29 05:43:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:03,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-29 05:43:03,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:03,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:03,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:03,772 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 168 flow. Second operand 3 states and 175 transitions. [2023-11-29 05:43:03,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 341 flow [2023-11-29 05:43:03,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:43:03,779 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 166 flow [2023-11-29 05:43:03,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-11-29 05:43:03,780 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2023-11-29 05:43:03,780 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 166 flow [2023-11-29 05:43:03,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:03,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:03,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:03,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:43:03,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:43:03,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:03,781 INFO L85 PathProgramCache]: Analyzing trace with hash -795075534, now seen corresponding path program 1 times [2023-11-29 05:43:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:03,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382358624] [2023-11-29 05:43:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:43:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382358624] [2023-11-29 05:43:03,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382358624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:03,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:43:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503918251] [2023-11-29 05:43:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:03,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:03,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:03,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 05:43:03,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:03,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:03,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 05:43:03,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:05,053 INFO L124 PetriNetUnfolderBase]: 8998/16360 cut-off events. [2023-11-29 05:43:05,053 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-11-29 05:43:05,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29321 conditions, 16360 events. 8998/16360 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 136264 event pairs, 1292 based on Foata normal form. 330/15744 useless extension candidates. Maximal degree in co-relation 16776. Up to 9850 conditions per place. [2023-11-29 05:43:05,150 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-29 05:43:05,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 333 flow [2023-11-29 05:43:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:05,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-29 05:43:05,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2023-11-29 05:43:05,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-29 05:43:05,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-29 05:43:05,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:05,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-29 05:43:05,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:05,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:05,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:05,154 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 166 flow. Second operand 3 states and 174 transitions. [2023-11-29 05:43:05,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 333 flow [2023-11-29 05:43:05,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:43:05,160 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 164 flow [2023-11-29 05:43:05,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-11-29 05:43:05,161 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2023-11-29 05:43:05,161 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 164 flow [2023-11-29 05:43:05,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:05,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:05,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:05,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:43:05,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:43:05,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash 393956762, now seen corresponding path program 1 times [2023-11-29 05:43:05,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:05,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096935861] [2023-11-29 05:43:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:05,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096935861] [2023-11-29 05:43:05,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096935861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:05,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:05,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:43:05,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016507552] [2023-11-29 05:43:05,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:05,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:43:05,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:43:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:43:05,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 05:43:05,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:05,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:05,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 05:43:05,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:06,797 INFO L124 PetriNetUnfolderBase]: 9668/16533 cut-off events. [2023-11-29 05:43:06,797 INFO L125 PetriNetUnfolderBase]: For 968/968 co-relation queries the response was YES. [2023-11-29 05:43:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30789 conditions, 16533 events. 9668/16533 cut-off events. For 968/968 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 129751 event pairs, 4088 based on Foata normal form. 333/15555 useless extension candidates. Maximal degree in co-relation 30403. Up to 8705 conditions per place. [2023-11-29 05:43:06,891 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-11-29 05:43:06,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 119 transitions, 456 flow [2023-11-29 05:43:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:43:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:43:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2023-11-29 05:43:06,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7168674698795181 [2023-11-29 05:43:06,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 238 transitions. [2023-11-29 05:43:06,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 238 transitions. [2023-11-29 05:43:06,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:06,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 238 transitions. [2023-11-29 05:43:06,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:06,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:06,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:06,894 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 164 flow. Second operand 4 states and 238 transitions. [2023-11-29 05:43:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 119 transitions, 456 flow [2023-11-29 05:43:06,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:43:06,916 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 166 flow [2023-11-29 05:43:06,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-11-29 05:43:06,917 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2023-11-29 05:43:06,917 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 166 flow [2023-11-29 05:43:06,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:06,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:06,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:06,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:43:06,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:43:06,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash -672241780, now seen corresponding path program 1 times [2023-11-29 05:43:06,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269499441] [2023-11-29 05:43:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:06,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:06,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269499441] [2023-11-29 05:43:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269499441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:06,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:06,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:43:06,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231915813] [2023-11-29 05:43:06,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:06,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:43:06,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:06,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:43:06,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:43:07,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 05:43:07,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:07,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:07,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 05:43:07,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:09,153 INFO L124 PetriNetUnfolderBase]: 16936/29240 cut-off events. [2023-11-29 05:43:09,154 INFO L125 PetriNetUnfolderBase]: For 2642/2642 co-relation queries the response was YES. [2023-11-29 05:43:09,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55266 conditions, 29240 events. 16936/29240 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 250298 event pairs, 9884 based on Foata normal form. 333/27356 useless extension candidates. Maximal degree in co-relation 52974. Up to 13493 conditions per place. [2023-11-29 05:43:09,264 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 90 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2023-11-29 05:43:09,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 128 transitions, 494 flow [2023-11-29 05:43:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:43:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:43:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2023-11-29 05:43:09,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7439759036144579 [2023-11-29 05:43:09,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2023-11-29 05:43:09,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2023-11-29 05:43:09,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:09,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2023-11-29 05:43:09,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:09,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:09,267 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:09,267 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 166 flow. Second operand 4 states and 247 transitions. [2023-11-29 05:43:09,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 128 transitions, 494 flow [2023-11-29 05:43:09,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 128 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:43:09,276 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 185 flow [2023-11-29 05:43:09,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-11-29 05:43:09,276 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-29 05:43:09,277 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 185 flow [2023-11-29 05:43:09,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:09,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:09,277 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:09,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:43:09,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:43:09,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 374392372, now seen corresponding path program 1 times [2023-11-29 05:43:09,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:09,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584215610] [2023-11-29 05:43:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 05:43:09,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:09,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584215610] [2023-11-29 05:43:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584215610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:09,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:43:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820740426] [2023-11-29 05:43:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:09,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:09,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 05:43:09,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:09,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:09,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 05:43:09,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:11,831 INFO L124 PetriNetUnfolderBase]: 17906/31461 cut-off events. [2023-11-29 05:43:11,831 INFO L125 PetriNetUnfolderBase]: For 4570/4813 co-relation queries the response was YES. [2023-11-29 05:43:11,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59653 conditions, 31461 events. 17906/31461 cut-off events. For 4570/4813 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 277591 event pairs, 3220 based on Foata normal form. 540/30352 useless extension candidates. Maximal degree in co-relation 33867. Up to 18630 conditions per place. [2023-11-29 05:43:11,998 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 63 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-29 05:43:11,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 382 flow [2023-11-29 05:43:11,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-29 05:43:11,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2023-11-29 05:43:11,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-29 05:43:12,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-29 05:43:12,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:12,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-29 05:43:12,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:12,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:12,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:12,001 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 185 flow. Second operand 3 states and 174 transitions. [2023-11-29 05:43:12,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 382 flow [2023-11-29 05:43:12,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:43:12,006 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 184 flow [2023-11-29 05:43:12,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-11-29 05:43:12,007 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-29 05:43:12,007 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 184 flow [2023-11-29 05:43:12,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:12,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:12,007 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-29 05:43:12,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:43:12,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 05:43:12,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1278752998, now seen corresponding path program 1 times [2023-11-29 05:43:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:12,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026341436] [2023-11-29 05:43:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:12,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:12,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:43:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:12,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:43:12,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:43:12,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 05:43:12,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-29 05:43:12,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-29 05:43:12,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-29 05:43:12,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-29 05:43:12,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-29 05:43:12,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-29 05:43:12,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-29 05:43:12,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-29 05:43:12,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-29 05:43:12,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-29 05:43:12,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-29 05:43:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-29 05:43:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-29 05:43:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-29 05:43:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-29 05:43:12,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-29 05:43:12,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:43:12,037 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:12,038 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:43:12,038 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 05:43:12,083 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:43:12,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 109 transitions, 246 flow [2023-11-29 05:43:12,100 INFO L124 PetriNetUnfolderBase]: 16/120 cut-off events. [2023-11-29 05:43:12,101 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 05:43:12,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 120 events. 16/120 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 452 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 103. Up to 5 conditions per place. [2023-11-29 05:43:12,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 109 transitions, 246 flow [2023-11-29 05:43:12,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 109 transitions, 246 flow [2023-11-29 05:43:12,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:43:12,105 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;@7963d69b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:43:12,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-29 05:43:12,107 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:43:12,107 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 05:43:12,107 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:43:12,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:12,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:43:12,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 05:43:12,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash 515105593, now seen corresponding path program 1 times [2023-11-29 05:43:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:12,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121352986] [2023-11-29 05:43:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121352986] [2023-11-29 05:43:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121352986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:12,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:12,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:43:12,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178321050] [2023-11-29 05:43:12,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:12,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:12,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:12,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:12,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:12,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-11-29 05:43:12,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:12,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:12,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-11-29 05:43:12,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:27,741 INFO L124 PetriNetUnfolderBase]: 133413/202278 cut-off events. [2023-11-29 05:43:27,741 INFO L125 PetriNetUnfolderBase]: For 11893/11893 co-relation queries the response was YES. [2023-11-29 05:43:28,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376518 conditions, 202278 events. 133413/202278 cut-off events. For 11893/11893 co-relation queries the response was YES. Maximal size of possible extension queue 6688. Compared 1810384 event pairs, 79712 based on Foata normal form. 34335/224634 useless extension candidates. Maximal degree in co-relation 244176. Up to 140997 conditions per place. [2023-11-29 05:43:29,139 INFO L140 encePairwiseOnDemand]: 97/109 looper letters, 81 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-11-29 05:43:29,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 134 transitions, 483 flow [2023-11-29 05:43:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-11-29 05:43:29,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7737003058103975 [2023-11-29 05:43:29,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-11-29 05:43:29,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-11-29 05:43:29,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:29,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-11-29 05:43:29,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,144 INFO L175 Difference]: Start difference. First operand has 102 places, 109 transitions, 246 flow. Second operand 3 states and 253 transitions. [2023-11-29 05:43:29,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 134 transitions, 483 flow [2023-11-29 05:43:29,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 134 transitions, 471 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 05:43:29,151 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 224 flow [2023-11-29 05:43:29,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2023-11-29 05:43:29,152 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2023-11-29 05:43:29,152 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 224 flow [2023-11-29 05:43:29,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:29,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:43:29,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:43:29,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 05:43:29,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1211595195, now seen corresponding path program 1 times [2023-11-29 05:43:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:29,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366123952] [2023-11-29 05:43:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366123952] [2023-11-29 05:43:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366123952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:29,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:43:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534371865] [2023-11-29 05:43:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:29,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:29,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-11-29 05:43:29,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:29,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:29,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-11-29 05:43:29,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:43,627 INFO L124 PetriNetUnfolderBase]: 121225/183898 cut-off events. [2023-11-29 05:43:43,628 INFO L125 PetriNetUnfolderBase]: For 10147/10147 co-relation queries the response was YES. [2023-11-29 05:43:43,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346866 conditions, 183898 events. 121225/183898 cut-off events. For 10147/10147 co-relation queries the response was YES. Maximal size of possible extension queue 6057. Compared 1628355 event pairs, 72008 based on Foata normal form. 3333/176296 useless extension candidates. Maximal degree in co-relation 346125. Up to 125701 conditions per place. [2023-11-29 05:43:44,655 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 80 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-11-29 05:43:44,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 133 transitions, 471 flow [2023-11-29 05:43:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-29 05:43:44,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217125382262997 [2023-11-29 05:43:44,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-29 05:43:44,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-29 05:43:44,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:44,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-29 05:43:44,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:44,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:44,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:44,658 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 224 flow. Second operand 3 states and 236 transitions. [2023-11-29 05:43:44,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 133 transitions, 471 flow [2023-11-29 05:43:44,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 133 transitions, 467 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:43:44,667 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 222 flow [2023-11-29 05:43:44,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-11-29 05:43:44,668 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -1 predicate places. [2023-11-29 05:43:44,668 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 222 flow [2023-11-29 05:43:44,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:44,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:44,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:44,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:43:44,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 05:43:44,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:44,669 INFO L85 PathProgramCache]: Analyzing trace with hash -469014369, now seen corresponding path program 1 times [2023-11-29 05:43:44,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:44,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077780596] [2023-11-29 05:43:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:44,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:43:44,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:44,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077780596] [2023-11-29 05:43:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077780596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:44,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:44,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:43:44,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270871405] [2023-11-29 05:43:44,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:44,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:44,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:44,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:44,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:44,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-11-29 05:43:44,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:44,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:44,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-11-29 05:43:44,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:44:00,136 INFO L124 PetriNetUnfolderBase]: 135176/212308 cut-off events. [2023-11-29 05:44:00,136 INFO L125 PetriNetUnfolderBase]: For 11360/11360 co-relation queries the response was YES. [2023-11-29 05:44:00,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391562 conditions, 212308 events. 135176/212308 cut-off events. For 11360/11360 co-relation queries the response was YES. Maximal size of possible extension queue 6517. Compared 2032159 event pairs, 18692 based on Foata normal form. 3330/205545 useless extension candidates. Maximal degree in co-relation 307617. Up to 140940 conditions per place. [2023-11-29 05:44:01,327 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 80 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-29 05:44:01,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 466 flow [2023-11-29 05:44:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:44:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:44:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-29 05:44:01,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217125382262997 [2023-11-29 05:44:01,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-29 05:44:01,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-29 05:44:01,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:44:01,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-29 05:44:01,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:01,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:01,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:01,331 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 222 flow. Second operand 3 states and 236 transitions. [2023-11-29 05:44:01,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 466 flow [2023-11-29 05:44:01,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 131 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:44:01,377 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 220 flow [2023-11-29 05:44:01,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-11-29 05:44:01,377 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2023-11-29 05:44:01,378 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 220 flow [2023-11-29 05:44:01,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:01,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:44:01,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:44:01,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:44:01,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 05:44:01,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1654542920, now seen corresponding path program 1 times [2023-11-29 05:44:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202829433] [2023-11-29 05:44:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:44:01,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:01,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202829433] [2023-11-29 05:44:01,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202829433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:01,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:01,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:44:01,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185699104] [2023-11-29 05:44:01,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:01,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:44:01,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:01,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:44:01,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:44:01,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-11-29 05:44:01,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:01,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:44:01,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-11-29 05:44:01,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:44:16,026 INFO L124 PetriNetUnfolderBase]: 123216/197018 cut-off events. [2023-11-29 05:44:16,026 INFO L125 PetriNetUnfolderBase]: For 7058/7058 co-relation queries the response was YES. [2023-11-29 05:44:16,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359980 conditions, 197018 events. 123216/197018 cut-off events. For 7058/7058 co-relation queries the response was YES. Maximal size of possible extension queue 6093. Compared 1914310 event pairs, 18692 based on Foata normal form. 3330/190381 useless extension candidates. Maximal degree in co-relation 209004. Up to 125650 conditions per place. [2023-11-29 05:44:17,089 INFO L140 encePairwiseOnDemand]: 106/109 looper letters, 79 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-11-29 05:44:17,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 130 transitions, 458 flow [2023-11-29 05:44:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:44:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:44:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-11-29 05:44:17,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7186544342507645 [2023-11-29 05:44:17,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-11-29 05:44:17,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-11-29 05:44:17,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:44:17,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-11-29 05:44:17,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:17,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:17,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:17,093 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 220 flow. Second operand 3 states and 235 transitions. [2023-11-29 05:44:17,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 130 transitions, 458 flow [2023-11-29 05:44:17,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 130 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:44:17,112 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 218 flow [2023-11-29 05:44:17,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2023-11-29 05:44:17,113 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2023-11-29 05:44:17,113 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 218 flow [2023-11-29 05:44:17,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:17,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:44:17,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:44:17,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:44:17,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 05:44:17,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash 273306176, now seen corresponding path program 1 times [2023-11-29 05:44:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:17,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568086908] [2023-11-29 05:44:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:17,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568086908] [2023-11-29 05:44:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568086908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:17,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:17,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:44:17,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054053888] [2023-11-29 05:44:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:17,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:44:17,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:44:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:44:17,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 109 [2023-11-29 05:44:17,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:17,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:44:17,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 109 [2023-11-29 05:44:17,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:44:38,433 INFO L124 PetriNetUnfolderBase]: 195148/287854 cut-off events. [2023-11-29 05:44:38,433 INFO L125 PetriNetUnfolderBase]: For 15972/15972 co-relation queries the response was YES. [2023-11-29 05:44:39,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548586 conditions, 287854 events. 195148/287854 cut-off events. For 15972/15972 co-relation queries the response was YES. Maximal size of possible extension queue 7873. Compared 2551321 event pairs, 25784 based on Foata normal form. 6666/275944 useless extension candidates. Maximal degree in co-relation 547743. Up to 125701 conditions per place. [2023-11-29 05:44:40,214 INFO L140 encePairwiseOnDemand]: 103/109 looper letters, 187 selfloop transitions, 6 changer transitions 0/239 dead transitions. [2023-11-29 05:44:40,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 239 transitions, 966 flow [2023-11-29 05:44:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:44:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:44:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 490 transitions. [2023-11-29 05:44:40,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7492354740061162 [2023-11-29 05:44:40,217 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 490 transitions. [2023-11-29 05:44:40,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 490 transitions. [2023-11-29 05:44:40,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:44:40,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 490 transitions. [2023-11-29 05:44:40,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:40,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:40,220 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:40,220 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 218 flow. Second operand 6 states and 490 transitions. [2023-11-29 05:44:40,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 239 transitions, 966 flow [2023-11-29 05:44:40,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 239 transitions, 946 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:44:40,599 INFO L231 Difference]: Finished difference. Result has 102 places, 97 transitions, 232 flow [2023-11-29 05:44:40,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=102, PETRI_TRANSITIONS=97} [2023-11-29 05:44:40,600 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2023-11-29 05:44:40,600 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 97 transitions, 232 flow [2023-11-29 05:44:40,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:40,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:44:40,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:44:40,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:44:40,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 05:44:40,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash -117442516, now seen corresponding path program 1 times [2023-11-29 05:44:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:40,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220502553] [2023-11-29 05:44:40,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:40,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:40,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:40,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220502553] [2023-11-29 05:44:40,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220502553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:40,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:40,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:44:40,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126019721] [2023-11-29 05:44:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:40,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:44:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:44:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:44:40,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 109 [2023-11-29 05:44:40,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:40,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:44:40,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 109 [2023-11-29 05:44:40,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand