./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd --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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:27:53,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:27:53,323 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:27:53,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:27:53,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:27:53,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:27:53,366 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:27:53,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:27:53,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:27:53,366 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:27:53,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:27:53,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:27:53,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:27:53,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:27:53,369 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:27:53,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:27:53,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:27:53,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:27:53,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:27:53,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:27:53,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:27:53,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:27:53,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:27:53,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:27:53,371 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:27:53,371 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:27:53,371 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:27:53,372 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:27:53,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:27:53,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:27:53,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:27:53,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:27:53,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:27:53,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:27:53,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:27:53,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:27:53,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:27:53,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:27:53,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:27:53,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:27:53,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:27:53,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:27:53,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:27:53,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:27:53,374 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd 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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-13 13:27:53,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:27:53,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:27:53,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:27:53,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:27:53,699 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:27:53,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c Unable to find full path for "g++" [2024-11-13 13:27:55,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:27:55,989 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:27:55,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-13 13:27:56,004 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/data/0cac04840/f0bc52ba89024a63b5468d6d8eb9f3ed/FLAG2ead28a76 [2024-11-13 13:27:56,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/data/0cac04840/f0bc52ba89024a63b5468d6d8eb9f3ed [2024-11-13 13:27:56,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:27:56,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:27:56,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:27:56,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:27:56,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:27:56,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd796f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56, skipping insertion in model container [2024-11-13 13:27:56,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:27:56,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:27:56,359 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:27:56,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:27:56,423 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:27:56,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56 WrapperNode [2024-11-13 13:27:56,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:27:56,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:27:56,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:27:56,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:27:56,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,472 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2024-11-13 13:27:56,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:27:56,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:27:56,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:27:56,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:27:56,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,525 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:27:56,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:27:56,552 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:27:56,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:27:56,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:27:56,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (1/1) ... [2024-11-13 13:27:56,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:27:56,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:27:56,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:27:56,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_937ccadb-b6a7-4ef1-9512-473667f639c7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:27:56,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:27:56,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:27:56,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:27:56,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:27:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:27:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:27:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:27:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-13 13:27:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-13 13:27:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:27:56,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:27:56,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:27:56,645 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:27:56,772 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:27:56,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:27:57,135 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:27:57,135 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:27:57,375 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:27:57,375 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 13:27:57,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:57 BoogieIcfgContainer [2024-11-13 13:27:57,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:27:57,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:27:57,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:27:57,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:27:57,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:56" (1/3) ... [2024-11-13 13:27:57,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42adb01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:57, skipping insertion in model container [2024-11-13 13:27:57,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:56" (2/3) ... [2024-11-13 13:27:57,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42adb01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:57, skipping insertion in model container [2024-11-13 13:27:57,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:57" (3/3) ... [2024-11-13 13:27:57,390 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-13 13:27:57,407 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:27:57,408 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 59 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2024-11-13 13:27:57,409 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:27:57,520 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 13:27:57,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-13 13:27:57,651 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-13 13:27:57,656 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 13:27:57,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 167 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-13 13:27:57,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-13 13:27:57,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-11-13 13:27:57,682 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:27:57,700 INFO L333 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, 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;@2be2cf47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:27:57,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-13 13:27:57,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:27:57,709 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-13 13:27:57,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:27:57,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:27:57,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 13:27:57,711 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:27:57,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:27:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash 369113490, now seen corresponding path program 1 times [2024-11-13 13:27:57,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:27:57,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087306796] [2024-11-13 13:27:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:27:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:27:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:27:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:27:57,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:27:57,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087306796] [2024-11-13 13:27:57,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087306796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:27:57,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:27:57,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:27:57,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533647758] [2024-11-13 13:27:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:27:57,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:27:57,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:27:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:27:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:27:57,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-13 13:27:58,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 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) [2024-11-13 13:27:58,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:27:58,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-13 13:27:58,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:28:02,934 INFO L124 PetriNetUnfolderBase]: 28409/41660 cut-off events. [2024-11-13 13:28:02,935 INFO L125 PetriNetUnfolderBase]: For 1852/1852 co-relation queries the response was YES. [2024-11-13 13:28:03,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80294 conditions, 41660 events. 28409/41660 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 2159. Compared 304775 event pairs, 13092 based on Foata normal form. 0/30295 useless extension candidates. Maximal degree in co-relation 74609. Up to 20574 conditions per place. [2024-11-13 13:28:03,314 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 70 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-11-13 13:28:03,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 360 flow [2024-11-13 13:28:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:28:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:28:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-13 13:28:03,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-13 13:28:03,335 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 130 transitions. [2024-11-13 13:28:03,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 360 flow [2024-11-13 13:28:03,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 338 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-13 13:28:03,539 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 144 flow [2024-11-13 13:28:03,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-13 13:28:03,548 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2024-11-13 13:28:03,548 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 144 flow [2024-11-13 13:28:03,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2024-11-13 13:28:03,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:03,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 13:28:03,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:28:03,549 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:28:03,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash 369113491, now seen corresponding path program 1 times [2024-11-13 13:28:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:03,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067248297] [2024-11-13 13:28:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:03,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067248297] [2024-11-13 13:28:03,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067248297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:03,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:28:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631475094] [2024-11-13 13:28:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:03,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:28:03,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:28:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:28:03,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-13 13:28:03,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 144 flow. Second operand has 3 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) [2024-11-13 13:28:03,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:03,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-13 13:28:03,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:28:07,379 INFO L124 PetriNetUnfolderBase]: 27849/40731 cut-off events. [2024-11-13 13:28:07,379 INFO L125 PetriNetUnfolderBase]: For 5602/5602 co-relation queries the response was YES. [2024-11-13 13:28:07,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83714 conditions, 40731 events. 27849/40731 cut-off events. For 5602/5602 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 290453 event pairs, 7534 based on Foata normal form. 953/35067 useless extension candidates. Maximal degree in co-relation 44616. Up to 29137 conditions per place. [2024-11-13 13:28:07,671 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-13 13:28:07,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 361 flow [2024-11-13 13:28:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:28:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:28:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-13 13:28:07,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-11-13 13:28:07,676 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 144 flow. Second operand 3 states and 128 transitions. [2024-11-13 13:28:07,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 361 flow [2024-11-13 13:28:07,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:28:07,907 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 155 flow [2024-11-13 13:28:07,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-13 13:28:07,908 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-13 13:28:07,908 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 155 flow [2024-11-13 13:28:07,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2024-11-13 13:28:07,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:07,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:07,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:28:07,910 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:28:07,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1764206987, now seen corresponding path program 1 times [2024-11-13 13:28:07,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065036329] [2024-11-13 13:28:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:08,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:08,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065036329] [2024-11-13 13:28:08,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065036329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:08,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:08,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:28:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210331834] [2024-11-13 13:28:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:08,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:28:08,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:28:08,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:08,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:08,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:28:08,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:28:12,105 INFO L124 PetriNetUnfolderBase]: 43625/63827 cut-off events. [2024-11-13 13:28:12,105 INFO L125 PetriNetUnfolderBase]: For 15150/15150 co-relation queries the response was YES. [2024-11-13 13:28:12,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132875 conditions, 63827 events. 43625/63827 cut-off events. For 15150/15150 co-relation queries the response was YES. Maximal size of possible extension queue 2639. Compared 474395 event pairs, 25311 based on Foata normal form. 1154/53896 useless extension candidates. Maximal degree in co-relation 60807. Up to 45801 conditions per place. [2024-11-13 13:28:12,540 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 105 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-13 13:28:12,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 527 flow [2024-11-13 13:28:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:28:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:28:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-13 13:28:12,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6895161290322581 [2024-11-13 13:28:12,546 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 155 flow. Second operand 4 states and 171 transitions. [2024-11-13 13:28:12,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 527 flow [2024-11-13 13:28:12,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:28:12,576 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 181 flow [2024-11-13 13:28:12,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-11-13 13:28:12,579 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2024-11-13 13:28:12,579 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 181 flow [2024-11-13 13:28:12,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:12,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:12,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:12,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:28:12,581 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:28:12,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1326191612, now seen corresponding path program 1 times [2024-11-13 13:28:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:12,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033666205] [2024-11-13 13:28:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:12,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:12,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:12,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033666205] [2024-11-13 13:28:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033666205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:12,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:28:12,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071106826] [2024-11-13 13:28:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:12,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:28:12,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:28:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:28:12,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-13 13:28:12,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:12,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:12,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-13 13:28:12,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:28:16,516 INFO L124 PetriNetUnfolderBase]: 38050/56522 cut-off events. [2024-11-13 13:28:16,517 INFO L125 PetriNetUnfolderBase]: For 23260/24196 co-relation queries the response was YES. [2024-11-13 13:28:16,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128264 conditions, 56522 events. 38050/56522 cut-off events. For 23260/24196 co-relation queries the response was YES. Maximal size of possible extension queue 2298. Compared 418863 event pairs, 18817 based on Foata normal form. 0/48628 useless extension candidates. Maximal degree in co-relation 76012. Up to 29564 conditions per place. [2024-11-13 13:28:16,731 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 76 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-11-13 13:28:16,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 453 flow [2024-11-13 13:28:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:28:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:28:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-13 13:28:16,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 13:28:16,733 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 181 flow. Second operand 3 states and 124 transitions. [2024-11-13 13:28:16,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 453 flow [2024-11-13 13:28:16,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:28:16,776 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 202 flow [2024-11-13 13:28:16,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-11-13 13:28:16,777 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-11-13 13:28:16,777 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 202 flow [2024-11-13 13:28:16,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:16,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:16,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:16,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:28:16,777 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:28:16,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1326191613, now seen corresponding path program 1 times [2024-11-13 13:28:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:16,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496515035] [2024-11-13 13:28:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:16,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:16,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496515035] [2024-11-13 13:28:16,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496515035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:16,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:16,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:28:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578860364] [2024-11-13 13:28:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:16,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:28:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:28:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:28:16,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-13 13:28:16,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:16,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:16,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-13 13:28:16,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:28:20,773 INFO L124 PetriNetUnfolderBase]: 37476/56011 cut-off events. [2024-11-13 13:28:20,774 INFO L125 PetriNetUnfolderBase]: For 29364/31236 co-relation queries the response was YES. [2024-11-13 13:28:20,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132652 conditions, 56011 events. 37476/56011 cut-off events. For 29364/31236 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 409236 event pairs, 10252 based on Foata normal form. 1332/55552 useless extension candidates. Maximal degree in co-relation 77717. Up to 38504 conditions per place. [2024-11-13 13:28:21,316 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 76 selfloop transitions, 3 changer transitions 1/94 dead transitions. [2024-11-13 13:28:21,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 471 flow [2024-11-13 13:28:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:28:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:28:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-13 13:28:21,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-11-13 13:28:21,317 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 202 flow. Second operand 3 states and 122 transitions. [2024-11-13 13:28:21,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 471 flow [2024-11-13 13:28:21,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:28:21,451 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 213 flow [2024-11-13 13:28:21,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-13 13:28:21,452 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-11-13 13:28:21,452 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 213 flow [2024-11-13 13:28:21,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:21,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:21,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:21,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:28:21,453 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:28:21,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash 14902448, now seen corresponding path program 1 times [2024-11-13 13:28:21,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:21,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390495129] [2024-11-13 13:28:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390495129] [2024-11-13 13:28:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390495129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:21,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:28:21,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692897622] [2024-11-13 13:28:21,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:21,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:28:21,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-13 13:28:21,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:21,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:21,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-13 13:28:21,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:28:28,537 INFO L124 PetriNetUnfolderBase]: 58559/86885 cut-off events. [2024-11-13 13:28:28,537 INFO L125 PetriNetUnfolderBase]: For 54728/57074 co-relation queries the response was YES. [2024-11-13 13:28:28,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213247 conditions, 86885 events. 58559/86885 cut-off events. For 54728/57074 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 657378 event pairs, 15866 based on Foata normal form. 3434/88656 useless extension candidates. Maximal degree in co-relation 81849. Up to 31457 conditions per place. [2024-11-13 13:28:28,962 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 119 selfloop transitions, 7 changer transitions 0/140 dead transitions. [2024-11-13 13:28:28,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 140 transitions, 725 flow [2024-11-13 13:28:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:28:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:28:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-13 13:28:28,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-11-13 13:28:28,964 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 213 flow. Second operand 4 states and 184 transitions. [2024-11-13 13:28:28,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 140 transitions, 725 flow [2024-11-13 13:28:29,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:28:29,775 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 275 flow [2024-11-13 13:28:29,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-13 13:28:29,776 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2024-11-13 13:28:29,777 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 275 flow [2024-11-13 13:28:29,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:29,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:29,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:29,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:28:29,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:28:29,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1135132385, now seen corresponding path program 1 times [2024-11-13 13:28:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3067696] [2024-11-13 13:28:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:29,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:29,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3067696] [2024-11-13 13:28:29,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3067696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:29,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:29,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:28:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677427712] [2024-11-13 13:28:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:29,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:29,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:28:29,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:28:29,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:29,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:29,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:28:29,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:28:41,116 INFO L124 PetriNetUnfolderBase]: 93759/136569 cut-off events. [2024-11-13 13:28:41,116 INFO L125 PetriNetUnfolderBase]: For 128801/134527 co-relation queries the response was YES. [2024-11-13 13:28:41,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351358 conditions, 136569 events. 93759/136569 cut-off events. For 128801/134527 co-relation queries the response was YES. Maximal size of possible extension queue 3673. Compared 1059675 event pairs, 53447 based on Foata normal form. 2630/134792 useless extension candidates. Maximal degree in co-relation 169805. Up to 97029 conditions per place. [2024-11-13 13:28:42,260 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 131 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2024-11-13 13:28:42,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 147 transitions, 915 flow [2024-11-13 13:28:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:28:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:28:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-13 13:28:42,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-13 13:28:42,261 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 275 flow. Second operand 4 states and 164 transitions. [2024-11-13 13:28:42,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 147 transitions, 915 flow [2024-11-13 13:28:43,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 147 transitions, 915 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:28:43,433 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 304 flow [2024-11-13 13:28:43,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-13 13:28:43,434 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2024-11-13 13:28:43,434 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 304 flow [2024-11-13 13:28:43,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:43,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:28:43,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:28:43,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:28:43,434 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-13 13:28:43,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:28:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1436364722, now seen corresponding path program 1 times [2024-11-13 13:28:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:28:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812866889] [2024-11-13 13:28:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:28:43,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:28:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:28:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:28:43,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:28:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812866889] [2024-11-13 13:28:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812866889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:28:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:28:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:28:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861053974] [2024-11-13 13:28:43,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:28:43,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:28:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:28:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:28:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:28:43,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-13 13:28:43,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:28:43,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:28:43,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-13 13:28:43,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand