./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/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_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/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_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/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 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:27:34,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:27:34,372 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:27:34,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:27:34,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:27:34,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:27:34,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:27:34,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:27:34,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:27:34,405 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:27:34,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:27:34,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:27:34,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:27:34,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:27:34,407 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:27:34,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:27:34,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:27:34,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:27:34,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:27:34,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:27:34,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:27:34,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:27:34,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:27:34,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:27:34,413 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:27:34,413 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:27:34,414 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:27:34,414 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:27:34,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:27:34,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:27:34,415 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:27:34,416 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:27:34,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:27:34,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:27:34,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:27:34,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:27:34,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:27:34,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:27:34,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:27:34,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:27:34,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:27:34,418 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:27:34,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:27:34,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:27:34,418 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_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2023-11-29 03:27:34,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:27:34,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:27:34,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:27:34,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:27:34,660 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:27:34,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-29 03:27:37,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:27:37,920 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:27:37,920 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-29 03:27:37,929 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/data/b721985ce/cd9e4ce252b4400e896863ea92dc60d7/FLAG062c3bb93 [2023-11-29 03:27:37,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/data/b721985ce/cd9e4ce252b4400e896863ea92dc60d7 [2023-11-29 03:27:37,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:27:37,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:27:37,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:27:37,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:27:37,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:27:37,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:27:37" (1/1) ... [2023-11-29 03:27:37,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73008c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:37, skipping insertion in model container [2023-11-29 03:27:37,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:27:37" (1/1) ... [2023-11-29 03:27:37,992 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:27:38,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:27:38,242 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:27:38,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:27:38,288 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:27:38,289 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:27:38,297 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:27:38,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38 WrapperNode [2023-11-29 03:27:38,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:27:38,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:27:38,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:27:38,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:27:38,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,353 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 192 [2023-11-29 03:27:38,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:27:38,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:27:38,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:27:38,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:27:38,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,396 INFO L175 MemorySlicer]: Split 25 memory accesses to 7 slices as follows [2, 2, 13, 2, 2, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 3, 1, 1, 1, 1]. [2023-11-29 03:27:38,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:27:38,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:27:38,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:27:38,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:27:38,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (1/1) ... [2023-11-29 03:27:38,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:27:38,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:27:38,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:27:38,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:27:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:27:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:27:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:27:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:27:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:27:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:27:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:27:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:27:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 03:27:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:27:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:27:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:27:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:27:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:27:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:27:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 03:27:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:27:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:27:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:27:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:27:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:27:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:27:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 03:27:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 03:27:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:27:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:27:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:27:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:27:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:27:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:27:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 03:27:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-29 03:27:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-29 03:27:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:27:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:27:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:27:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:27:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:27:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:27:38,508 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 03:27:38,651 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:27:38,653 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:27:39,040 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:27:39,279 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:27:39,279 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 03:27:39,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:27:39 BoogieIcfgContainer [2023-11-29 03:27:39,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:27:39,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:27:39,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:27:39,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:27:39,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:27:37" (1/3) ... [2023-11-29 03:27:39,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e13ad09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:27:39, skipping insertion in model container [2023-11-29 03:27:39,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:27:38" (2/3) ... [2023-11-29 03:27:39,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e13ad09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:27:39, skipping insertion in model container [2023-11-29 03:27:39,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:27:39" (3/3) ... [2023-11-29 03:27:39,288 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2023-11-29 03:27:39,297 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:27:39,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:27:39,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 03:27:39,306 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:27:39,385 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-29 03:27:39,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 83 transitions, 201 flow [2023-11-29 03:27:39,478 INFO L124 PetriNetUnfolderBase]: 5/78 cut-off events. [2023-11-29 03:27:39,478 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 03:27:39,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 78 events. 5/78 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 236 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-29 03:27:39,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 83 transitions, 201 flow [2023-11-29 03:27:39,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 76 transitions, 179 flow [2023-11-29 03:27:39,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:27:39,505 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;@1f530ade, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:27:39,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-29 03:27:39,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:27:39,509 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 03:27:39,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:27:39,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:27:39,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:27:39,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:27:39,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:27:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash 665378, now seen corresponding path program 1 times [2023-11-29 03:27:39,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:27:39,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012870584] [2023-11-29 03:27:39,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:27:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:27:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:27:39,819 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 03:27:39,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:27:39,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012870584] [2023-11-29 03:27:39,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012870584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:27:39,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:27:39,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:27:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430430531] [2023-11-29 03:27:39,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:27:39,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:27:39,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:27:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:27:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:27:39,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2023-11-29 03:27:39,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 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 03:27:39,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:27:39,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2023-11-29 03:27:39,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:27:45,567 INFO L124 PetriNetUnfolderBase]: 34293/44158 cut-off events. [2023-11-29 03:27:45,567 INFO L125 PetriNetUnfolderBase]: For 1480/1480 co-relation queries the response was YES. [2023-11-29 03:27:45,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88453 conditions, 44158 events. 34293/44158 cut-off events. For 1480/1480 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 264674 event pairs, 25617 based on Foata normal form. 1/38592 useless extension candidates. Maximal degree in co-relation 76150. Up to 42101 conditions per place. [2023-11-29 03:27:45,996 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 44 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-11-29 03:27:45,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 275 flow [2023-11-29 03:27:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:27:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:27:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2023-11-29 03:27:46,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572289156626506 [2023-11-29 03:27:46,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 185 transitions. [2023-11-29 03:27:46,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 185 transitions. [2023-11-29 03:27:46,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:27:46,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 185 transitions. [2023-11-29 03:27:46,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 03:27:46,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:27:46,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:27:46,026 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 179 flow. Second operand 4 states and 185 transitions. [2023-11-29 03:27:46,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 76 transitions, 275 flow [2023-11-29 03:27:46,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 258 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 03:27:46,116 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 185 flow [2023-11-29 03:27:46,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-11-29 03:27:46,122 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -7 predicate places. [2023-11-29 03:27:46,122 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 185 flow [2023-11-29 03:27:46,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 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 03:27:46,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:27:46,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:27:46,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:27:46,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:27:46,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:27:46,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1651881650, now seen corresponding path program 1 times [2023-11-29 03:27:46,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:27:46,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878440971] [2023-11-29 03:27:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:27:46,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:27:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:27:46,272 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 03:27:46,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:27:46,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878440971] [2023-11-29 03:27:46,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878440971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:27:46,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189792245] [2023-11-29 03:27:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:27:46,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:27:46,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:27:46,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:27:46,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:27:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:27:46,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:27:46,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:27:46,477 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 03:27:46,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:27:46,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189792245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:27:46,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:27:46,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:27:46,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786214299] [2023-11-29 03:27:46,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:27:46,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:27:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:27:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:27:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:27:46,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2023-11-29 03:27:46,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 03:27:46,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:27:46,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2023-11-29 03:27:46,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:27:50,749 INFO L124 PetriNetUnfolderBase]: 34293/44157 cut-off events. [2023-11-29 03:27:50,749 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-11-29 03:27:50,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87680 conditions, 44157 events. 34293/44157 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 264286 event pairs, 25617 based on Foata normal form. 1/38592 useless extension candidates. Maximal degree in co-relation 87653. Up to 42096 conditions per place. [2023-11-29 03:27:51,307 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 40 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2023-11-29 03:27:51,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 75 transitions, 275 flow [2023-11-29 03:27:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:27:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:27:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2023-11-29 03:27:51,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939759036144578 [2023-11-29 03:27:51,310 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 246 transitions. [2023-11-29 03:27:51,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 246 transitions. [2023-11-29 03:27:51,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:27:51,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 246 transitions. [2023-11-29 03:27:51,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 03:27:51,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 03:27:51,317 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 03:27:51,317 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 185 flow. Second operand 6 states and 246 transitions. [2023-11-29 03:27:51,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 75 transitions, 275 flow [2023-11-29 03:27:51,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 75 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:27:51,321 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 192 flow [2023-11-29 03:27:51,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2023-11-29 03:27:51,322 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -4 predicate places. [2023-11-29 03:27:51,323 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 192 flow [2023-11-29 03:27:51,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 03:27:51,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:27:51,324 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:27:51,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 03:27:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:27:51,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:27:51,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:27:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash 331277085, now seen corresponding path program 1 times [2023-11-29 03:27:51,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:27:51,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667023183] [2023-11-29 03:27:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:27:51,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:27:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:27:51,642 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 03:27:51,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:27:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667023183] [2023-11-29 03:27:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667023183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:27:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774534263] [2023-11-29 03:27:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:27:51,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:27:51,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:27:51,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:27:51,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:27:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:27:51,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:27:51,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:27:51,800 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 03:27:51,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:27:51,848 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 03:27:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774534263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:27:51,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:27:51,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:27:51,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675188444] [2023-11-29 03:27:51,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:27:51,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:27:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:27:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:27:51,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:27:51,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2023-11-29 03:27:51,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 192 flow. Second operand has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 03:27:51,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:27:51,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2023-11-29 03:27:51,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:27:55,529 INFO L124 PetriNetUnfolderBase]: 34296/44169 cut-off events. [2023-11-29 03:27:55,529 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-11-29 03:27:55,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87724 conditions, 44169 events. 34296/44169 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 264602 event pairs, 25617 based on Foata normal form. 3/38604 useless extension candidates. Maximal degree in co-relation 87654. Up to 42103 conditions per place. [2023-11-29 03:27:55,990 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 43 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2023-11-29 03:27:55,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 358 flow [2023-11-29 03:27:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:27:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:27:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 389 transitions. [2023-11-29 03:27:55,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686746987951807 [2023-11-29 03:27:55,994 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 389 transitions. [2023-11-29 03:27:55,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 389 transitions. [2023-11-29 03:27:55,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:27:55,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 389 transitions. [2023-11-29 03:27:55,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.9) internal successors, (389), 10 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 03:27:56,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 03:27:56,001 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 03:27:56,001 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 192 flow. Second operand 10 states and 389 transitions. [2023-11-29 03:27:56,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 358 flow [2023-11-29 03:27:56,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 312 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 03:27:56,005 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 244 flow [2023-11-29 03:27:56,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-29 03:27:56,006 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-11-29 03:27:56,006 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 244 flow [2023-11-29 03:27:56,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.083333333333336) internal successors, (409), 12 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 03:27:56,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:27:56,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:27:56,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:27:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:27:56,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:27:56,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:27:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1883989990, now seen corresponding path program 1 times [2023-11-29 03:27:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:27:56,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947078402] [2023-11-29 03:27:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:27:56,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:27:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:27:56,332 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 03:27:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:27:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947078402] [2023-11-29 03:27:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947078402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:27:56,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:27:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:27:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435008648] [2023-11-29 03:27:56,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:27:56,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:27:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:27:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:27:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:27:56,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 03:27:56,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:27:56,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:27:56,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 03:27:56,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:28:00,490 INFO L124 PetriNetUnfolderBase]: 34295/44168 cut-off events. [2023-11-29 03:28:00,491 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2023-11-29 03:28:00,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87721 conditions, 44168 events. 34295/44168 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 264865 event pairs, 25617 based on Foata normal form. 1/38604 useless extension candidates. Maximal degree in co-relation 87687. Up to 42107 conditions per place. [2023-11-29 03:28:00,775 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 52 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-29 03:28:00,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 348 flow [2023-11-29 03:28:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:28:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:28:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-29 03:28:00,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.606425702811245 [2023-11-29 03:28:00,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-29 03:28:00,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-29 03:28:00,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:28:00,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-29 03:28:00,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 03:28:00,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:00,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:00,780 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 244 flow. Second operand 3 states and 151 transitions. [2023-11-29 03:28:00,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 348 flow [2023-11-29 03:28:00,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 338 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 03:28:00,783 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 234 flow [2023-11-29 03:28:00,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-29 03:28:00,784 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-11-29 03:28:00,784 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 234 flow [2023-11-29 03:28:00,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:00,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:28:00,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:28:00,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:28:00,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:28:00,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:28:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1702149178, now seen corresponding path program 1 times [2023-11-29 03:28:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:28:00,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425767251] [2023-11-29 03:28:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:28:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:28:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:28:01,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425767251] [2023-11-29 03:28:01,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425767251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:28:01,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223613627] [2023-11-29 03:28:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:01,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:28:01,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:28:01,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:28:01,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:28:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:01,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:28:01,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:28:01,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:28:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:28:01,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:28:01,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-29 03:28:01,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-29 03:28:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:28:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223613627] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:28:01,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:28:01,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 03:28:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992761292] [2023-11-29 03:28:01,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:28:01,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:28:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:28:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:28:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:28:01,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 03:28:01,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 234 flow. Second operand has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 03:28:01,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:28:01,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 03:28:01,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:28:08,570 INFO L124 PetriNetUnfolderBase]: 49475/71144 cut-off events. [2023-11-29 03:28:08,570 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2023-11-29 03:28:08,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133505 conditions, 71144 events. 49475/71144 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 2816. Compared 529861 event pairs, 17473 based on Foata normal form. 0/62172 useless extension candidates. Maximal degree in co-relation 133485. Up to 35277 conditions per place. [2023-11-29 03:28:09,046 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 95 selfloop transitions, 12 changer transitions 0/136 dead transitions. [2023-11-29 03:28:09,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 136 transitions, 564 flow [2023-11-29 03:28:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:28:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 03:28:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 379 transitions. [2023-11-29 03:28:09,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707831325301205 [2023-11-29 03:28:09,049 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 379 transitions. [2023-11-29 03:28:09,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 379 transitions. [2023-11-29 03:28:09,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:28:09,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 379 transitions. [2023-11-29 03:28:09,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 47.375) internal successors, (379), 8 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 03:28:09,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 03:28:09,055 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 03:28:09,055 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 234 flow. Second operand 8 states and 379 transitions. [2023-11-29 03:28:09,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 136 transitions, 564 flow [2023-11-29 03:28:09,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 136 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:28:09,061 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 278 flow [2023-11-29 03:28:09,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2023-11-29 03:28:09,062 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2023-11-29 03:28:09,062 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 278 flow [2023-11-29 03:28:09,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 03:28:09,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:28:09,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:28:09,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:28:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:28:09,265 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:28:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:28:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 980071595, now seen corresponding path program 1 times [2023-11-29 03:28:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:28:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236103815] [2023-11-29 03:28:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:28:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:28:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:28:09,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236103815] [2023-11-29 03:28:09,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236103815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:28:09,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:28:09,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:28:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959655741] [2023-11-29 03:28:09,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:28:09,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:28:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:28:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:28:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:28:09,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2023-11-29 03:28:09,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:09,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:28:09,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2023-11-29 03:28:09,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:28:21,496 INFO L124 PetriNetUnfolderBase]: 98726/128863 cut-off events. [2023-11-29 03:28:21,496 INFO L125 PetriNetUnfolderBase]: For 49652/49652 co-relation queries the response was YES. [2023-11-29 03:28:21,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291021 conditions, 128863 events. 98726/128863 cut-off events. For 49652/49652 co-relation queries the response was YES. Maximal size of possible extension queue 4363. Compared 851808 event pairs, 56240 based on Foata normal form. 1832/118920 useless extension candidates. Maximal degree in co-relation 290989. Up to 90494 conditions per place. [2023-11-29 03:28:22,647 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 119 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2023-11-29 03:28:22,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 148 transitions, 706 flow [2023-11-29 03:28:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:28:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:28:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2023-11-29 03:28:22,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6897590361445783 [2023-11-29 03:28:22,650 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 229 transitions. [2023-11-29 03:28:22,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 229 transitions. [2023-11-29 03:28:22,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:28:22,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 229 transitions. [2023-11-29 03:28:22,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 03:28:22,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:22,653 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:22,653 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 278 flow. Second operand 4 states and 229 transitions. [2023-11-29 03:28:22,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 148 transitions, 706 flow [2023-11-29 03:28:22,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 696 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:28:22,722 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 297 flow [2023-11-29 03:28:22,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2023-11-29 03:28:22,723 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2023-11-29 03:28:22,723 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 297 flow [2023-11-29 03:28:22,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:22,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:28:22,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:28:22,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:28:22,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:28:22,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:28:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash -617155011, now seen corresponding path program 1 times [2023-11-29 03:28:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:28:22,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145570586] [2023-11-29 03:28:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:22,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:28:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:28:22,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:28:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145570586] [2023-11-29 03:28:22,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145570586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:28:22,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:28:22,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:28:22,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502921866] [2023-11-29 03:28:22,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:28:22,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:28:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:28:22,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:28:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:28:22,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2023-11-29 03:28:22,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 03:28:22,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:28:22,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2023-11-29 03:28:22,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:28:32,509 INFO L124 PetriNetUnfolderBase]: 89490/116776 cut-off events. [2023-11-29 03:28:32,509 INFO L125 PetriNetUnfolderBase]: For 35599/47070 co-relation queries the response was YES. [2023-11-29 03:28:32,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268733 conditions, 116776 events. 89490/116776 cut-off events. For 35599/47070 co-relation queries the response was YES. Maximal size of possible extension queue 4186. Compared 780807 event pairs, 49406 based on Foata normal form. 9336/117154 useless extension candidates. Maximal degree in co-relation 268702. Up to 80160 conditions per place. [2023-11-29 03:28:33,315 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 113 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2023-11-29 03:28:33,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 144 transitions, 671 flow [2023-11-29 03:28:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:28:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:28:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2023-11-29 03:28:33,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6927710843373494 [2023-11-29 03:28:33,317 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 230 transitions. [2023-11-29 03:28:33,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 230 transitions. [2023-11-29 03:28:33,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:28:33,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 230 transitions. [2023-11-29 03:28:33,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.5) internal successors, (230), 4 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 03:28:33,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:33,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:33,320 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 297 flow. Second operand 4 states and 230 transitions. [2023-11-29 03:28:33,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 144 transitions, 671 flow [2023-11-29 03:28:33,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 144 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:28:33,409 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 315 flow [2023-11-29 03:28:33,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2023-11-29 03:28:33,410 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2023-11-29 03:28:33,410 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 315 flow [2023-11-29 03:28:33,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 03:28:33,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:28:33,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:28:33,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:28:33,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:28:33,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:28:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash -705866649, now seen corresponding path program 1 times [2023-11-29 03:28:33,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:28:33,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428309264] [2023-11-29 03:28:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:28:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:28:33,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:28:33,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428309264] [2023-11-29 03:28:33,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428309264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:28:33,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97395141] [2023-11-29 03:28:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:33,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:28:33,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:28:33,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:28:33,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:28:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:34,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:28:34,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:28:34,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:28:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:28:34,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:28:34,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-29 03:28:34,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 03:28:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:28:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97395141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:28:34,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:28:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 03:28:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289474982] [2023-11-29 03:28:34,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:28:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:28:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:28:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:28:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:28:34,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 03:28:34,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 315 flow. Second operand has 11 states, 11 states have (on average 37.54545454545455) internal successors, (413), 11 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 03:28:34,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:28:34,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 03:28:34,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:28:46,022 INFO L124 PetriNetUnfolderBase]: 82550/123730 cut-off events. [2023-11-29 03:28:46,023 INFO L125 PetriNetUnfolderBase]: For 82883/92994 co-relation queries the response was YES. [2023-11-29 03:28:46,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279837 conditions, 123730 events. 82550/123730 cut-off events. For 82883/92994 co-relation queries the response was YES. Maximal size of possible extension queue 4385. Compared 1060237 event pairs, 34162 based on Foata normal form. 5056/117414 useless extension candidates. Maximal degree in co-relation 279804. Up to 59184 conditions per place. [2023-11-29 03:28:47,142 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 110 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2023-11-29 03:28:47,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 153 transitions, 777 flow [2023-11-29 03:28:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:28:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 03:28:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 379 transitions. [2023-11-29 03:28:47,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707831325301205 [2023-11-29 03:28:47,144 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 379 transitions. [2023-11-29 03:28:47,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 379 transitions. [2023-11-29 03:28:47,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:28:47,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 379 transitions. [2023-11-29 03:28:47,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 47.375) internal successors, (379), 8 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 03:28:47,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 03:28:47,148 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 03:28:47,148 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 315 flow. Second operand 8 states and 379 transitions. [2023-11-29 03:28:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 153 transitions, 777 flow [2023-11-29 03:28:47,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 153 transitions, 759 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:28:47,275 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 357 flow [2023-11-29 03:28:47,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2023-11-29 03:28:47,275 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 22 predicate places. [2023-11-29 03:28:47,276 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 357 flow [2023-11-29 03:28:47,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.54545454545455) internal successors, (413), 11 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 03:28:47,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:28:47,276 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 03:28:47,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:28:47,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:28:47,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:28:47,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:28:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2088746697, now seen corresponding path program 2 times [2023-11-29 03:28:47,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:28:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44530858] [2023-11-29 03:28:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:28:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:28:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:28:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44530858] [2023-11-29 03:28:47,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44530858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:28:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708383746] [2023-11-29 03:28:47,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:28:47,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:28:47,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:28:47,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:28:47,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:28:47,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:28:47,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:28:47,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:28:47,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:28:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:28:47,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:28:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:28:47,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708383746] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:28:47,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:28:47,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 03:28:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379891806] [2023-11-29 03:28:47,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:28:47,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:28:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:28:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:28:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:28:47,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2023-11-29 03:28:47,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 357 flow. Second operand has 14 states, 14 states have (on average 34.142857142857146) internal successors, (478), 14 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 03:28:47,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:28:47,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2023-11-29 03:28:47,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:28:58,120 INFO L124 PetriNetUnfolderBase]: 82551/105937 cut-off events. [2023-11-29 03:28:58,120 INFO L125 PetriNetUnfolderBase]: For 94671/104782 co-relation queries the response was YES. [2023-11-29 03:28:58,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283899 conditions, 105937 events. 82551/105937 cut-off events. For 94671/104782 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 668199 event pairs, 60754 based on Foata normal form. 5058/104645 useless extension candidates. Maximal degree in co-relation 283852. Up to 100154 conditions per place. [2023-11-29 03:28:59,044 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 47 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2023-11-29 03:28:59,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 95 transitions, 498 flow [2023-11-29 03:28:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:28:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:28:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 521 transitions. [2023-11-29 03:28:59,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483648881239243 [2023-11-29 03:28:59,048 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 521 transitions. [2023-11-29 03:28:59,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 521 transitions. [2023-11-29 03:28:59,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:28:59,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 521 transitions. [2023-11-29 03:28:59,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 37.214285714285715) internal successors, (521), 14 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 03:28:59,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 83.0) internal successors, (1245), 15 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 03:28:59,053 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 83.0) internal successors, (1245), 15 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states 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 03:28:59,054 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 357 flow. Second operand 14 states and 521 transitions. [2023-11-29 03:28:59,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 95 transitions, 498 flow [2023-11-29 03:28:59,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 95 transitions, 475 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-29 03:28:59,498 INFO L231 Difference]: Finished difference. Result has 113 places, 95 transitions, 381 flow [2023-11-29 03:28:59,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=381, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2023-11-29 03:28:59,500 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 26 predicate places. [2023-11-29 03:28:59,500 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 381 flow [2023-11-29 03:28:59,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 34.142857142857146) internal successors, (478), 14 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 03:28:59,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:28:59,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:28:59,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:28:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b22bed7-66c2-42a2-9446-99bcfe9ed81f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:28:59,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:28:59,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:28:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -408884384, now seen corresponding path program 1 times [2023-11-29 03:28:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:28:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785829531] [2023-11-29 03:28:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:28:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:28:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:28:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:28:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:28:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785829531] [2023-11-29 03:28:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785829531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:28:59,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:28:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:28:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073431717] [2023-11-29 03:28:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:28:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:28:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:28:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:28:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:28:59,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 03:28:59,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:28:59,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:28:59,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 03:28:59,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:29:08,326 INFO L124 PetriNetUnfolderBase]: 63578/98814 cut-off events. [2023-11-29 03:29:08,326 INFO L125 PetriNetUnfolderBase]: For 78058/86149 co-relation queries the response was YES. [2023-11-29 03:29:08,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239066 conditions, 98814 events. 63578/98814 cut-off events. For 78058/86149 co-relation queries the response was YES. Maximal size of possible extension queue 3475. Compared 857744 event pairs, 8635 based on Foata normal form. 4046/96012 useless extension candidates. Maximal degree in co-relation 238962. Up to 65495 conditions per place. [2023-11-29 03:29:09,079 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 96 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-11-29 03:29:09,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 128 transitions, 707 flow [2023-11-29 03:29:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:29:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:29:09,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-29 03:29:09,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2023-11-29 03:29:09,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-29 03:29:09,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-29 03:29:09,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:29:09,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-29 03:29:09,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:29:09,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:29:09,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:29:09,084 INFO L175 Difference]: Start difference. First operand has 113 places, 95 transitions, 381 flow. Second operand 3 states and 174 transitions. [2023-11-29 03:29:09,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 128 transitions, 707 flow [2023-11-29 03:29:09,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 128 transitions, 639 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-29 03:29:09,166 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 321 flow [2023-11-29 03:29:09,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2023-11-29 03:29:09,167 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 17 predicate places. [2023-11-29 03:29:09,167 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 321 flow [2023-11-29 03:29:09,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:29:09,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:29:09,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:09,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:29:09,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:29:09,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash 106192338, now seen corresponding path program 1 times [2023-11-29 03:29:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:09,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017792151] [2023-11-29 03:29:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:29:09,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:09,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017792151] [2023-11-29 03:29:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017792151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:29:09,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:29:09,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:29:09,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749984367] [2023-11-29 03:29:09,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:29:09,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:29:09,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:29:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:29:09,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2023-11-29 03:29:09,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 03:29:09,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:29:09,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2023-11-29 03:29:09,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:29:31,792 INFO L124 PetriNetUnfolderBase]: 172622/225752 cut-off events. [2023-11-29 03:29:31,792 INFO L125 PetriNetUnfolderBase]: For 215171/237038 co-relation queries the response was YES. [2023-11-29 03:29:32,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614391 conditions, 225752 events. 172622/225752 cut-off events. For 215171/237038 co-relation queries the response was YES. Maximal size of possible extension queue 6235. Compared 1542613 event pairs, 95893 based on Foata normal form. 14362/233484 useless extension candidates. Maximal degree in co-relation 404371. Up to 153150 conditions per place. [2023-11-29 03:29:33,867 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 137 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2023-11-29 03:29:33,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 167 transitions, 879 flow [2023-11-29 03:29:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:29:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:29:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2023-11-29 03:29:33,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6897590361445783 [2023-11-29 03:29:33,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 229 transitions. [2023-11-29 03:29:33,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 229 transitions. [2023-11-29 03:29:33,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:29:33,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 229 transitions. [2023-11-29 03:29:33,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 03:29:33,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:29:33,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:29:33,872 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 321 flow. Second operand 4 states and 229 transitions. [2023-11-29 03:29:33,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 167 transitions, 879 flow [2023-11-29 03:29:34,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 167 transitions, 875 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:29:34,997 INFO L231 Difference]: Finished difference. Result has 107 places, 98 transitions, 346 flow [2023-11-29 03:29:34,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=107, PETRI_TRANSITIONS=98} [2023-11-29 03:29:34,998 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2023-11-29 03:29:34,998 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 98 transitions, 346 flow [2023-11-29 03:29:34,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 03:29:34,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:29:34,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:34,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:29:34,999 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 03:29:34,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash 267007177, now seen corresponding path program 1 times [2023-11-29 03:29:34,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:34,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856118517] [2023-11-29 03:29:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:34,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:29:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856118517] [2023-11-29 03:29:35,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856118517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:29:35,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:29:35,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:29:35,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833770663] [2023-11-29 03:29:35,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:29:35,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:29:35,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:29:35,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:29:35,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2023-11-29 03:29:35,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 03:29:35,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:29:35,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2023-11-29 03:29:35,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand