./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/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_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/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_8e0d984c-39a8-4e8f-ada9-563b1586e654/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:23:21,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:23:21,401 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:23:21,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:23:21,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:23:21,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:23:21,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:23:21,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:23:21,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:23:21,441 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:23:21,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:23:21,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:23:21,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:23:21,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:23:21,444 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:23:21,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:23:21,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:23:21,446 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:23:21,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:23:21,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:23:21,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:23:21,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:23:21,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:23:21,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:23:21,449 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:23:21,450 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:23:21,450 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:23:21,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:23:21,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:23:21,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:23:21,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:23:21,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:23:21,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:23:21,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:23:21,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:23:21,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:23:21,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:23:21,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:23:21,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:23:21,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:23:21,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:23:21,455 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:23:21,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:23:21,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:23:21,456 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_8e0d984c-39a8-4e8f-ada9-563b1586e654/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2023-11-29 02:23:21,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:23:21,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:23:21,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:23:21,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:23:21,743 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:23:21,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-29 02:23:24,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:23:24,702 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:23:24,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-29 02:23:24,712 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/data/7575985c6/773d8108e9294bbebdc47a7ab3773108/FLAG319a78981 [2023-11-29 02:23:24,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/data/7575985c6/773d8108e9294bbebdc47a7ab3773108 [2023-11-29 02:23:24,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:23:24,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:23:24,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:23:24,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:23:24,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:23:24,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:23:24" (1/1) ... [2023-11-29 02:23:24,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38878217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:24, skipping insertion in model container [2023-11-29 02:23:24,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:23:24" (1/1) ... [2023-11-29 02:23:24,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:23:24,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:23:24,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:23:25,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:23:25,046 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:23:25,046 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:23:25,055 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:23:25,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25 WrapperNode [2023-11-29 02:23:25,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:23:25,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:23:25,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:23:25,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:23:25,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,127 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 515 [2023-11-29 02:23:25,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:23:25,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:23:25,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:23:25,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:23:25,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,178 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 16]. 62 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 4]. [2023-11-29 02:23:25,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:23:25,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:23:25,224 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:23:25,224 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:23:25,225 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (1/1) ... [2023-11-29 02:23:25,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:23:25,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:23:25,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:23:25,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:23:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:23:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:23:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:23:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:23:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:23:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:23:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 02:23:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 02:23:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:23:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:23:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:23:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:23:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 02:23:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 02:23:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 02:23:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 02:23:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 02:23:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 02:23:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 02:23:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 02:23:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 02:23:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 02:23:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:23:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 02:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 02:23:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 02:23:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:23:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:23:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:23:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:23:25,311 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 02:23:25,470 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:23:25,473 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:23:26,166 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:23:26,825 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:23:26,826 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-29 02:23:26,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:23:26 BoogieIcfgContainer [2023-11-29 02:23:26,826 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:23:26,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:23:26,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:23:26,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:23:26,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:23:24" (1/3) ... [2023-11-29 02:23:26,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed327b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:23:26, skipping insertion in model container [2023-11-29 02:23:26,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:23:25" (2/3) ... [2023-11-29 02:23:26,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed327b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:23:26, skipping insertion in model container [2023-11-29 02:23:26,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:23:26" (3/3) ... [2023-11-29 02:23:26,837 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-11-29 02:23:26,848 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:23:26,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:23:26,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-29 02:23:26,860 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:23:26,967 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 02:23:27,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 125 transitions, 278 flow [2023-11-29 02:23:27,100 INFO L124 PetriNetUnfolderBase]: 24/121 cut-off events. [2023-11-29 02:23:27,100 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 02:23:27,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 121 events. 24/121 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 409 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2023-11-29 02:23:27,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 125 transitions, 278 flow [2023-11-29 02:23:27,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 119 transitions, 259 flow [2023-11-29 02:23:27,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:23:27,132 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;@1adc5043, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:23:27,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-29 02:23:27,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:23:27,137 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 02:23:27,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:23:27,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:27,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 02:23:27,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:23:27,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1466334, now seen corresponding path program 1 times [2023-11-29 02:23:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:27,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503160137] [2023-11-29 02:23:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:27,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:27,484 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 02:23:27,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503160137] [2023-11-29 02:23:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503160137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:27,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:27,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:23:27,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392846728] [2023-11-29 02:23:27,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:27,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:23:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:23:27,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:23:27,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 125 [2023-11-29 02:23:27,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 119 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:23:27,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:27,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 125 [2023-11-29 02:23:27,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:23:32,333 INFO L124 PetriNetUnfolderBase]: 24613/31790 cut-off events. [2023-11-29 02:23:32,333 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2023-11-29 02:23:32,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62890 conditions, 31790 events. 24613/31790 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 195956 event pairs, 15813 based on Foata normal form. 3184/21207 useless extension candidates. Maximal degree in co-relation 58128. Up to 29964 conditions per place. [2023-11-29 02:23:32,790 INFO L140 encePairwiseOnDemand]: 88/125 looper letters, 70 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2023-11-29 02:23:32,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 115 transitions, 417 flow [2023-11-29 02:23:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:23:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:23:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2023-11-29 02:23:32,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502 [2023-11-29 02:23:32,804 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 251 transitions. [2023-11-29 02:23:32,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 251 transitions. [2023-11-29 02:23:32,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:23:32,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 251 transitions. [2023-11-29 02:23:32,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 02:23:32,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 02:23:32,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 02:23:32,819 INFO L175 Difference]: Start difference. First operand has 108 places, 119 transitions, 259 flow. Second operand 4 states and 251 transitions. [2023-11-29 02:23:32,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 115 transitions, 417 flow [2023-11-29 02:23:32,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 115 transitions, 404 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 02:23:32,969 INFO L231 Difference]: Finished difference. Result has 95 places, 115 transitions, 330 flow [2023-11-29 02:23:32,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=95, PETRI_TRANSITIONS=115} [2023-11-29 02:23:32,975 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -13 predicate places. [2023-11-29 02:23:32,975 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 115 transitions, 330 flow [2023-11-29 02:23:32,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:23:32,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:32,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 02:23:32,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:23:32,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:23:32,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 735369749, now seen corresponding path program 1 times [2023-11-29 02:23:32,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:32,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323984809] [2023-11-29 02:23:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:23:33,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323984809] [2023-11-29 02:23:33,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323984809] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:23:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165333469] [2023-11-29 02:23:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:33,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:23:33,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:23:33,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:23:33,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:23:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:33,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:23:33,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:23:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:23:33,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:23:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165333469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:33,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:23:33,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 02:23:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61449127] [2023-11-29 02:23:33,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:33,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:23:33,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:33,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:23:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:23:33,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 125 [2023-11-29 02:23:33,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 115 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 02:23:33,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:33,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 125 [2023-11-29 02:23:33,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:23:36,989 INFO L124 PetriNetUnfolderBase]: 24613/31786 cut-off events. [2023-11-29 02:23:36,989 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-29 02:23:37,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62594 conditions, 31786 events. 24613/31786 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 195883 event pairs, 15813 based on Foata normal form. 4/18030 useless extension candidates. Maximal degree in co-relation 62498. Up to 29944 conditions per place. [2023-11-29 02:23:37,213 INFO L140 encePairwiseOnDemand]: 108/125 looper letters, 57 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2023-11-29 02:23:37,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 111 transitions, 472 flow [2023-11-29 02:23:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:23:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:23:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2023-11-29 02:23:37,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39866666666666667 [2023-11-29 02:23:37,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 299 transitions. [2023-11-29 02:23:37,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 299 transitions. [2023-11-29 02:23:37,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:23:37,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 299 transitions. [2023-11-29 02:23:37,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 02:23:37,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 02:23:37,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 02:23:37,226 INFO L175 Difference]: Start difference. First operand has 95 places, 115 transitions, 330 flow. Second operand 6 states and 299 transitions. [2023-11-29 02:23:37,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 111 transitions, 472 flow [2023-11-29 02:23:37,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:23:37,231 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 358 flow [2023-11-29 02:23:37,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2023-11-29 02:23:37,232 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -12 predicate places. [2023-11-29 02:23:37,232 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 358 flow [2023-11-29 02:23:37,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 02:23:37,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:37,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 02:23:37,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:23:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:23:37,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:23:37,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1321627234, now seen corresponding path program 1 times [2023-11-29 02:23:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:37,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046013779] [2023-11-29 02:23:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:23:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046013779] [2023-11-29 02:23:37,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046013779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:23:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871607556] [2023-11-29 02:23:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:37,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:23:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:23:37,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:23:37,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:23:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:37,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:23:37,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:23:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:23:37,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:23:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:23:37,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871607556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:23:37,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:23:37,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:23:37,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371898556] [2023-11-29 02:23:37,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:23:37,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:23:37,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:37,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:23:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:23:37,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 125 [2023-11-29 02:23:37,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 358 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 02:23:37,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:37,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 125 [2023-11-29 02:23:37,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:23:40,757 INFO L124 PetriNetUnfolderBase]: 24625/31834 cut-off events. [2023-11-29 02:23:40,758 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-11-29 02:23:40,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62782 conditions, 31834 events. 24625/31834 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 2214. Compared 196180 event pairs, 15813 based on Foata normal form. 12/18087 useless extension candidates. Maximal degree in co-relation 62500. Up to 29963 conditions per place. [2023-11-29 02:23:40,980 INFO L140 encePairwiseOnDemand]: 108/125 looper letters, 66 selfloop transitions, 49 changer transitions 0/147 dead transitions. [2023-11-29 02:23:40,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 147 transitions, 822 flow [2023-11-29 02:23:40,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:23:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:23:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 487 transitions. [2023-11-29 02:23:40,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896 [2023-11-29 02:23:40,985 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 487 transitions. [2023-11-29 02:23:40,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 487 transitions. [2023-11-29 02:23:40,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:23:40,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 487 transitions. [2023-11-29 02:23:40,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 48.7) internal successors, (487), 10 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 02:23:40,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states 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 02:23:40,994 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states 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 02:23:40,994 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 358 flow. Second operand 10 states and 487 transitions. [2023-11-29 02:23:40,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 147 transitions, 822 flow [2023-11-29 02:23:40,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 714 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-29 02:23:41,001 INFO L231 Difference]: Finished difference. Result has 103 places, 147 transitions, 648 flow [2023-11-29 02:23:41,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=648, PETRI_PLACES=103, PETRI_TRANSITIONS=147} [2023-11-29 02:23:41,002 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -5 predicate places. [2023-11-29 02:23:41,002 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 147 transitions, 648 flow [2023-11-29 02:23:41,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 02:23:41,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:41,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:41,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:23:41,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e0d984c-39a8-4e8f-ada9-563b1586e654/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:23:41,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:23:41,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:41,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1647540865, now seen corresponding path program 1 times [2023-11-29 02:23:41,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:41,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384953496] [2023-11-29 02:23:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:41,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:41,280 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 02:23:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:41,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384953496] [2023-11-29 02:23:41,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384953496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:41,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:41,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:23:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33006051] [2023-11-29 02:23:41,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:41,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:23:41,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:41,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:23:41,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:23:41,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 125 [2023-11-29 02:23:41,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 147 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 02:23:41,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:41,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 125 [2023-11-29 02:23:41,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:23:46,957 INFO L124 PetriNetUnfolderBase]: 41877/55528 cut-off events. [2023-11-29 02:23:46,957 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2023-11-29 02:23:47,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107840 conditions, 55528 events. 41877/55528 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 3305. Compared 364510 event pairs, 12567 based on Foata normal form. 1537/34616 useless extension candidates. Maximal degree in co-relation 107711. Up to 31827 conditions per place. [2023-11-29 02:23:47,350 INFO L140 encePairwiseOnDemand]: 115/125 looper letters, 148 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2023-11-29 02:23:47,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 188 transitions, 1040 flow [2023-11-29 02:23:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:23:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:23:47,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-11-29 02:23:47,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453333333333333 [2023-11-29 02:23:47,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-11-29 02:23:47,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-11-29 02:23:47,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:23:47,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-11-29 02:23:47,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:23:47,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:23:47,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:23:47,357 INFO L175 Difference]: Start difference. First operand has 103 places, 147 transitions, 648 flow. Second operand 3 states and 242 transitions. [2023-11-29 02:23:47,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 188 transitions, 1040 flow [2023-11-29 02:23:47,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 188 transitions, 990 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-29 02:23:47,364 INFO L231 Difference]: Finished difference. Result has 104 places, 150 transitions, 634 flow [2023-11-29 02:23:47,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=104, PETRI_TRANSITIONS=150} [2023-11-29 02:23:47,366 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -4 predicate places. [2023-11-29 02:23:47,366 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 150 transitions, 634 flow [2023-11-29 02:23:47,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 02:23:47,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:47,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:47,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:23:47,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:23:47,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash -465838150, now seen corresponding path program 1 times [2023-11-29 02:23:47,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:47,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606033737] [2023-11-29 02:23:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:47,423 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 02:23:47,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606033737] [2023-11-29 02:23:47,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606033737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:47,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:47,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:23:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013762310] [2023-11-29 02:23:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:23:47,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:23:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:23:47,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 125 [2023-11-29 02:23:47,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 150 transitions, 634 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 02:23:47,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:47,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 125 [2023-11-29 02:23:47,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:23:54,315 INFO L124 PetriNetUnfolderBase]: 59891/78935 cut-off events. [2023-11-29 02:23:54,315 INFO L125 PetriNetUnfolderBase]: For 6726/6896 co-relation queries the response was YES. [2023-11-29 02:23:54,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166725 conditions, 78935 events. 59891/78935 cut-off events. For 6726/6896 co-relation queries the response was YES. Maximal size of possible extension queue 2624. Compared 499318 event pairs, 18307 based on Foata normal form. 0/57026 useless extension candidates. Maximal degree in co-relation 166601. Up to 41925 conditions per place. [2023-11-29 02:23:54,974 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 153 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2023-11-29 02:23:54,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 186 transitions, 1032 flow [2023-11-29 02:23:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:23:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:23:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-29 02:23:54,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813333333333334 [2023-11-29 02:23:54,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-29 02:23:54,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-29 02:23:54,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:23:54,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-29 02:23:54,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:23:54,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:23:54,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:23:54,978 INFO L175 Difference]: Start difference. First operand has 104 places, 150 transitions, 634 flow. Second operand 3 states and 218 transitions. [2023-11-29 02:23:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 186 transitions, 1032 flow [2023-11-29 02:23:54,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 186 transitions, 1028 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:23:54,985 INFO L231 Difference]: Finished difference. Result has 107 places, 151 transitions, 652 flow [2023-11-29 02:23:54,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=652, PETRI_PLACES=107, PETRI_TRANSITIONS=151} [2023-11-29 02:23:54,986 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2023-11-29 02:23:54,986 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 151 transitions, 652 flow [2023-11-29 02:23:54,987 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 02:23:54,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:54,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:54,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:23:54,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:23:54,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash -532255091, now seen corresponding path program 1 times [2023-11-29 02:23:54,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:54,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924163462] [2023-11-29 02:23:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:54,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:55,074 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 02:23:55,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:55,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924163462] [2023-11-29 02:23:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924163462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:55,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:55,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:23:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518879415] [2023-11-29 02:23:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:23:55,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:23:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:23:55,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 125 [2023-11-29 02:23:55,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 151 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 02:23:55,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:55,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 125 [2023-11-29 02:23:55,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:24:04,469 INFO L124 PetriNetUnfolderBase]: 69839/98944 cut-off events. [2023-11-29 02:24:04,469 INFO L125 PetriNetUnfolderBase]: For 18805/19281 co-relation queries the response was YES. [2023-11-29 02:24:04,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209663 conditions, 98944 events. 69839/98944 cut-off events. For 18805/19281 co-relation queries the response was YES. Maximal size of possible extension queue 3059. Compared 731053 event pairs, 25805 based on Foata normal form. 1756/72913 useless extension candidates. Maximal degree in co-relation 209538. Up to 43634 conditions per place. [2023-11-29 02:24:05,239 INFO L140 encePairwiseOnDemand]: 121/125 looper letters, 157 selfloop transitions, 2 changer transitions 0/196 dead transitions. [2023-11-29 02:24:05,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 196 transitions, 1092 flow [2023-11-29 02:24:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:24:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:24:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-11-29 02:24:05,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453333333333333 [2023-11-29 02:24:05,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-11-29 02:24:05,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-11-29 02:24:05,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:24:05,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-11-29 02:24:05,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:24:05,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:24:05,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:24:05,244 INFO L175 Difference]: Start difference. First operand has 107 places, 151 transitions, 652 flow. Second operand 3 states and 242 transitions. [2023-11-29 02:24:05,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 196 transitions, 1092 flow [2023-11-29 02:24:05,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 196 transitions, 1080 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:24:05,273 INFO L231 Difference]: Finished difference. Result has 108 places, 152 transitions, 658 flow [2023-11-29 02:24:05,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=108, PETRI_TRANSITIONS=152} [2023-11-29 02:24:05,274 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 0 predicate places. [2023-11-29 02:24:05,275 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 152 transitions, 658 flow [2023-11-29 02:24:05,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 02:24:05,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:24:05,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:24:05,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:24:05,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:24:05,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash 679963985, now seen corresponding path program 1 times [2023-11-29 02:24:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:24:05,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117166695] [2023-11-29 02:24:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:05,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:24:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:05,469 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 02:24:05,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:24:05,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117166695] [2023-11-29 02:24:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117166695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:24:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:24:05,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522466278] [2023-11-29 02:24:05,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:24:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:24:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:24:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:24:05,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 125 [2023-11-29 02:24:05,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 152 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:24:05,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:24:05,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 125 [2023-11-29 02:24:05,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:24:19,082 INFO L124 PetriNetUnfolderBase]: 105475/144697 cut-off events. [2023-11-29 02:24:19,082 INFO L125 PetriNetUnfolderBase]: For 21739/22695 co-relation queries the response was YES. [2023-11-29 02:24:19,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306881 conditions, 144697 events. 105475/144697 cut-off events. For 21739/22695 co-relation queries the response was YES. Maximal size of possible extension queue 4364. Compared 1043673 event pairs, 46949 based on Foata normal form. 0/103925 useless extension candidates. Maximal degree in co-relation 306755. Up to 82892 conditions per place. [2023-11-29 02:24:20,199 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 155 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2023-11-29 02:24:20,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 193 transitions, 1083 flow [2023-11-29 02:24:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:24:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:24:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-11-29 02:24:20,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6186666666666667 [2023-11-29 02:24:20,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-11-29 02:24:20,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-11-29 02:24:20,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:24:20,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-11-29 02:24:20,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 02:24:20,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:24:20,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:24:20,204 INFO L175 Difference]: Start difference. First operand has 108 places, 152 transitions, 658 flow. Second operand 3 states and 232 transitions. [2023-11-29 02:24:20,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 193 transitions, 1083 flow [2023-11-29 02:24:20,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 193 transitions, 1081 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:24:20,215 INFO L231 Difference]: Finished difference. Result has 111 places, 152 transitions, 674 flow [2023-11-29 02:24:20,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=674, PETRI_PLACES=111, PETRI_TRANSITIONS=152} [2023-11-29 02:24:20,216 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 3 predicate places. [2023-11-29 02:24:20,216 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 152 transitions, 674 flow [2023-11-29 02:24:20,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:24:20,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:24:20,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:24:20,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:24:20,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:24:20,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1877704515, now seen corresponding path program 1 times [2023-11-29 02:24:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:24:20,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778805679] [2023-11-29 02:24:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:20,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:24:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:20,280 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 02:24:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:24:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778805679] [2023-11-29 02:24:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778805679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:20,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:24:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:24:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440122722] [2023-11-29 02:24:20,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:24:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:24:20,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:24:20,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:24:20,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 125 [2023-11-29 02:24:20,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 152 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 02:24:20,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:24:20,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 125 [2023-11-29 02:24:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:24:40,654 INFO L124 PetriNetUnfolderBase]: 144555/205664 cut-off events. [2023-11-29 02:24:40,654 INFO L125 PetriNetUnfolderBase]: For 80143/84681 co-relation queries the response was YES. [2023-11-29 02:24:41,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453544 conditions, 205664 events. 144555/205664 cut-off events. For 80143/84681 co-relation queries the response was YES. Maximal size of possible extension queue 6551. Compared 1642569 event pairs, 50359 based on Foata normal form. 3404/155440 useless extension candidates. Maximal degree in co-relation 453417. Up to 95345 conditions per place. [2023-11-29 02:24:42,569 INFO L140 encePairwiseOnDemand]: 121/125 looper letters, 156 selfloop transitions, 2 changer transitions 0/196 dead transitions. [2023-11-29 02:24:42,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 196 transitions, 1121 flow [2023-11-29 02:24:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:24:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:24:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-11-29 02:24:42,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2023-11-29 02:24:42,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-11-29 02:24:42,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-11-29 02:24:42,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:24:42,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-11-29 02:24:42,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:24:42,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:24:42,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:24:42,573 INFO L175 Difference]: Start difference. First operand has 111 places, 152 transitions, 674 flow. Second operand 3 states and 240 transitions. [2023-11-29 02:24:42,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 196 transitions, 1121 flow [2023-11-29 02:24:42,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 196 transitions, 1109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:24:42,612 INFO L231 Difference]: Finished difference. Result has 112 places, 153 transitions, 680 flow [2023-11-29 02:24:42,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=112, PETRI_TRANSITIONS=153} [2023-11-29 02:24:42,613 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 4 predicate places. [2023-11-29 02:24:42,613 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 153 transitions, 680 flow [2023-11-29 02:24:42,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 02:24:42,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:24:42,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:24:42,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:24:42,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:24:42,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1920699542, now seen corresponding path program 1 times [2023-11-29 02:24:42,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:24:42,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886000258] [2023-11-29 02:24:42,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:42,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:24:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:42,672 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 02:24:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:24:42,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886000258] [2023-11-29 02:24:42,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886000258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:42,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:24:42,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:24:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416839310] [2023-11-29 02:24:42,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:24:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:24:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:24:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:24:42,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 125 [2023-11-29 02:24:42,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 153 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 02:24:42,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:24:42,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 125 [2023-11-29 02:24:42,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:25:09,695 INFO L124 PetriNetUnfolderBase]: 204007/278524 cut-off events. [2023-11-29 02:25:09,695 INFO L125 PetriNetUnfolderBase]: For 77371/85099 co-relation queries the response was YES. [2023-11-29 02:25:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610569 conditions, 278524 events. 204007/278524 cut-off events. For 77371/85099 co-relation queries the response was YES. Maximal size of possible extension queue 9020. Compared 2128903 event pairs, 91903 based on Foata normal form. 0/205886 useless extension candidates. Maximal degree in co-relation 610441. Up to 154528 conditions per place. [2023-11-29 02:25:12,135 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 154 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2023-11-29 02:25:12,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 193 transitions, 1111 flow [2023-11-29 02:25:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:25:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:25:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-11-29 02:25:12,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2023-11-29 02:25:12,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-11-29 02:25:12,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-11-29 02:25:12,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:25:12,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-11-29 02:25:12,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 02:25:12,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:25:12,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 02:25:12,138 INFO L175 Difference]: Start difference. First operand has 112 places, 153 transitions, 680 flow. Second operand 3 states and 230 transitions. [2023-11-29 02:25:12,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 193 transitions, 1111 flow [2023-11-29 02:25:12,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 193 transitions, 1109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:25:12,161 INFO L231 Difference]: Finished difference. Result has 115 places, 153 transitions, 696 flow [2023-11-29 02:25:12,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=696, PETRI_PLACES=115, PETRI_TRANSITIONS=153} [2023-11-29 02:25:12,162 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 7 predicate places. [2023-11-29 02:25:12,162 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 153 transitions, 696 flow [2023-11-29 02:25:12,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 02:25:12,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:25:12,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:25:12,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:25:12,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 02:25:12,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash 589652157, now seen corresponding path program 1 times [2023-11-29 02:25:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:12,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856350969] [2023-11-29 02:25:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:12,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,269 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 02:25:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:12,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856350969] [2023-11-29 02:25:12,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856350969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:12,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:12,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:25:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909046705] [2023-11-29 02:25:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:12,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:25:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:25:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:25:12,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 125 [2023-11-29 02:25:12,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 153 transitions, 696 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 02:25:12,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:25:12,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 125 [2023-11-29 02:25:12,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand