./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/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_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/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_0b34d474-893e-493b-a0e0-9151c89f462c/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 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:10:40,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:10:40,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:10:40,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:10:40,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:10:40,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:10:40,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:10:40,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:10:40,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:10:40,943 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:10:40,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:10:40,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:10:40,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:10:40,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:10:40,946 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:10:40,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:10:40,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:10:40,948 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:10:40,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:10:40,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:10:40,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:10:40,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:10:40,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:10:40,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:10:40,951 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:10:40,952 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:10:40,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:10:40,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:10:40,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:10:40,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:10:40,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:10:40,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:10:40,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:10:40,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:40,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:10:40,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:10:40,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:10:40,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:10:40,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:10:40,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:10:40,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:10:40,969 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:10:40,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:10:40,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:10:40,970 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_0b34d474-893e-493b-a0e0-9151c89f462c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ca06a4d1d66eab783b29fc3ce31114eee62eb7d17a2452b84e2d73b8d92cfa [2023-11-29 04:10:41,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:10:41,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:10:41,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:10:41,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:10:41,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:10:41,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2023-11-29 04:10:43,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:10:44,152 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:10:44,153 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2023-11-29 04:10:44,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/data/0d662e758/484783eb806943a98db1523ac5da975e/FLAG6dd86b79c [2023-11-29 04:10:44,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/data/0d662e758/484783eb806943a98db1523ac5da975e [2023-11-29 04:10:44,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:10:44,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:10:44,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:44,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:10:44,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:10:44,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628cf93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44, skipping insertion in model container [2023-11-29 04:10:44,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:10:44,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:44,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:10:44,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:10:44,401 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:10:44,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44 WrapperNode [2023-11-29 04:10:44,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:10:44,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:44,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:10:44,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:10:44,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,446 INFO L138 Inliner]: procedures = 25, calls = 38, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 239 [2023-11-29 04:10:44,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:10:44,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:10:44,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:10:44,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:10:44,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,481 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 6, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 2, 1, 1]. [2023-11-29 04:10:44,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:10:44,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:10:44,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:10:44,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:10:44,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (1/1) ... [2023-11-29 04:10:44,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:10:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:44,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:10:44,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:10:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:10:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:10:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:10:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:10:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:10:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:10:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:10:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:10:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:10:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:10:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:10:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:10:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:10:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:10:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:10:44,577 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 04:10:44,686 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:10:44,688 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:10:45,063 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:10:45,351 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:10:45,351 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:10:45,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:45 BoogieIcfgContainer [2023-11-29 04:10:45,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:10:45,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:10:45,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:10:45,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:10:45,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:10:44" (1/3) ... [2023-11-29 04:10:45,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8c406e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:45, skipping insertion in model container [2023-11-29 04:10:45,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:10:44" (2/3) ... [2023-11-29 04:10:45,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8c406e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:45, skipping insertion in model container [2023-11-29 04:10:45,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:45" (3/3) ... [2023-11-29 04:10:45,361 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2023-11-29 04:10:45,369 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:10:45,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:10:45,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 04:10:45,377 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:10:45,438 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:10:45,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 73 transitions, 160 flow [2023-11-29 04:10:45,505 INFO L124 PetriNetUnfolderBase]: 8/71 cut-off events. [2023-11-29 04:10:45,505 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:10:45,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 8/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-11-29 04:10:45,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 73 transitions, 160 flow [2023-11-29 04:10:45,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 69 transitions, 147 flow [2023-11-29 04:10:45,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:10:45,531 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;@42e50cbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:10:45,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-29 04:10:45,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:10:45,535 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 04:10:45,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:10:45,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:45,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:10:45,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:45,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 746031, now seen corresponding path program 1 times [2023-11-29 04:10:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:45,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829824289] [2023-11-29 04:10:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:45,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:45,787 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 04:10:45,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829824289] [2023-11-29 04:10:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829824289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:45,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:45,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:10:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758106409] [2023-11-29 04:10:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:45,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:10:45,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:10:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:10:45,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2023-11-29 04:10:45,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:45,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:45,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2023-11-29 04:10:45,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:46,087 INFO L124 PetriNetUnfolderBase]: 292/801 cut-off events. [2023-11-29 04:10:46,087 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-29 04:10:46,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 801 events. 292/801 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5189 event pairs, 180 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 1160. Up to 457 conditions per place. [2023-11-29 04:10:46,097 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 34 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2023-11-29 04:10:46,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 241 flow [2023-11-29 04:10:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:10:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-29 04:10:46,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6472602739726028 [2023-11-29 04:10:46,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-29 04:10:46,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-29 04:10:46,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:46,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-29 04:10:46,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 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 04:10:46,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:10:46,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:10:46,123 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 147 flow. Second operand 4 states and 189 transitions. [2023-11-29 04:10:46,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 241 flow [2023-11-29 04:10:46,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:10:46,130 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 202 flow [2023-11-29 04:10:46,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-11-29 04:10:46,135 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-11-29 04:10:46,135 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 202 flow [2023-11-29 04:10:46,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:46,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:46,136 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 04:10:46,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:10:46,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:46,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash 750910423, now seen corresponding path program 1 times [2023-11-29 04:10:46,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759265978] [2023-11-29 04:10:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:46,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:46,257 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 04:10:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759265978] [2023-11-29 04:10:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759265978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400671528] [2023-11-29 04:10:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:46,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:46,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:46,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:10:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:46,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:10:46,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:46,427 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 04:10:46,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:10:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400671528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:46,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:10:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 04:10:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073987586] [2023-11-29 04:10:46,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:46,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:10:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:10:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:10:46,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2023-11-29 04:10:46,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:46,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:46,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2023-11-29 04:10:46,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:46,683 INFO L124 PetriNetUnfolderBase]: 292/799 cut-off events. [2023-11-29 04:10:46,683 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 04:10:46,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 799 events. 292/799 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5203 event pairs, 180 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 1250. Up to 447 conditions per place. [2023-11-29 04:10:46,691 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 27 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-11-29 04:10:46,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 272 flow [2023-11-29 04:10:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:10:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:10:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2023-11-29 04:10:46,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58675799086758 [2023-11-29 04:10:46,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 257 transitions. [2023-11-29 04:10:46,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 257 transitions. [2023-11-29 04:10:46,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:46,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 257 transitions. [2023-11-29 04:10:46,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 0 states have call successors, (0), 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 04:10:46,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 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 04:10:46,700 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 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 04:10:46,700 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 202 flow. Second operand 6 states and 257 transitions. [2023-11-29 04:10:46,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 272 flow [2023-11-29 04:10:46,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:10:46,703 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 218 flow [2023-11-29 04:10:46,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2023-11-29 04:10:46,704 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2023-11-29 04:10:46,705 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 218 flow [2023-11-29 04:10:46,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:46,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:46,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 04:10:46,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:46,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:46,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:46,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:46,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1803387376, now seen corresponding path program 1 times [2023-11-29 04:10:46,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:46,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956531332] [2023-11-29 04:10:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:46,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:46,994 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 04:10:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956531332] [2023-11-29 04:10:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956531332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428102589] [2023-11-29 04:10:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:46,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:46,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:10:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:47,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:10:47,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:47,114 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 04:10:47,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:47,156 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 04:10:47,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428102589] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:47,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:10:47,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 04:10:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867379625] [2023-11-29 04:10:47,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:47,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:10:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:10:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:10:47,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2023-11-29 04:10:47,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:47,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:47,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2023-11-29 04:10:47,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:47,512 INFO L124 PetriNetUnfolderBase]: 298/823 cut-off events. [2023-11-29 04:10:47,512 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-29 04:10:47,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 823 events. 298/823 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5389 event pairs, 180 based on Foata normal form. 6/639 useless extension candidates. Maximal degree in co-relation 1252. Up to 458 conditions per place. [2023-11-29 04:10:47,518 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 32 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2023-11-29 04:10:47,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 91 transitions, 446 flow [2023-11-29 04:10:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:10:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:10:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 423 transitions. [2023-11-29 04:10:47,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794520547945206 [2023-11-29 04:10:47,522 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 423 transitions. [2023-11-29 04:10:47,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 423 transitions. [2023-11-29 04:10:47,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:47,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 423 transitions. [2023-11-29 04:10:47,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.3) internal successors, (423), 10 states have internal predecessors, (423), 0 states have call successors, (0), 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 04:10:47,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 0 states have call successors, (0), 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 04:10:47,529 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 0 states have call successors, (0), 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 04:10:47,529 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 218 flow. Second operand 10 states and 423 transitions. [2023-11-29 04:10:47,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 91 transitions, 446 flow [2023-11-29 04:10:47,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 91 transitions, 388 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 04:10:47,534 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 358 flow [2023-11-29 04:10:47,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2023-11-29 04:10:47,535 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2023-11-29 04:10:47,535 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 358 flow [2023-11-29 04:10:47,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:47,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:47,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:47,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:47,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:47,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1110413184, now seen corresponding path program 1 times [2023-11-29 04:10:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:47,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717509852] [2023-11-29 04:10:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:47,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:47,808 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 04:10:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717509852] [2023-11-29 04:10:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717509852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:47,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:10:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657321058] [2023-11-29 04:10:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:47,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:10:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:10:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:10:47,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 73 [2023-11-29 04:10:47,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 04:10:47,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:47,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 73 [2023-11-29 04:10:47,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:47,954 INFO L124 PetriNetUnfolderBase]: 296/821 cut-off events. [2023-11-29 04:10:47,954 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-29 04:10:47,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 821 events. 296/821 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5258 event pairs, 180 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 1332. Up to 467 conditions per place. [2023-11-29 04:10:47,961 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 46 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2023-11-29 04:10:47,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 89 transitions, 454 flow [2023-11-29 04:10:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:10:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:10:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-11-29 04:10:47,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7168949771689498 [2023-11-29 04:10:47,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-11-29 04:10:47,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-11-29 04:10:47,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:47,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-11-29 04:10:47,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 04:10:47,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 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 04:10:47,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 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 04:10:47,965 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 358 flow. Second operand 3 states and 157 transitions. [2023-11-29 04:10:47,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 89 transitions, 454 flow [2023-11-29 04:10:47,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 424 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-29 04:10:47,970 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 332 flow [2023-11-29 04:10:47,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2023-11-29 04:10:47,971 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2023-11-29 04:10:47,971 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 332 flow [2023-11-29 04:10:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 04:10:47,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:47,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:47,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:10:47,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:47,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 119351782, now seen corresponding path program 1 times [2023-11-29 04:10:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081282529] [2023-11-29 04:10:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:10:48,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:48,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081282529] [2023-11-29 04:10:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081282529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:48,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:48,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:10:48,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508057434] [2023-11-29 04:10:48,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:48,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:10:48,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:48,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:10:48,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:10:48,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2023-11-29 04:10:48,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:48,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:48,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2023-11-29 04:10:48,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:48,320 INFO L124 PetriNetUnfolderBase]: 557/1316 cut-off events. [2023-11-29 04:10:48,320 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-29 04:10:48,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 1316 events. 557/1316 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8880 event pairs, 167 based on Foata normal form. 40/1081 useless extension candidates. Maximal degree in co-relation 2243. Up to 446 conditions per place. [2023-11-29 04:10:48,332 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 81 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2023-11-29 04:10:48,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 562 flow [2023-11-29 04:10:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:10:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:10:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-11-29 04:10:48,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6952054794520548 [2023-11-29 04:10:48,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-11-29 04:10:48,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-11-29 04:10:48,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:48,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-11-29 04:10:48,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 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 04:10:48,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:10:48,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:10:48,336 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 332 flow. Second operand 4 states and 203 transitions. [2023-11-29 04:10:48,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 562 flow [2023-11-29 04:10:48,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:10:48,341 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 352 flow [2023-11-29 04:10:48,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2023-11-29 04:10:48,342 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-11-29 04:10:48,342 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 352 flow [2023-11-29 04:10:48,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:48,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:48,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:48,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:10:48,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:48,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash -595061250, now seen corresponding path program 1 times [2023-11-29 04:10:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521739196] [2023-11-29 04:10:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:10:48,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521739196] [2023-11-29 04:10:48,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521739196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530419991] [2023-11-29 04:10:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:48,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:48,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:48,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:48,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:10:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:48,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:10:48,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:10:48,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:10:48,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530419991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:48,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:10:48,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 04:10:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847522989] [2023-11-29 04:10:48,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:10:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:10:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:10:48,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2023-11-29 04:10:48,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 352 flow. Second operand has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 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 04:10:48,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:48,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2023-11-29 04:10:48,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:48,979 INFO L124 PetriNetUnfolderBase]: 365/1039 cut-off events. [2023-11-29 04:10:48,979 INFO L125 PetriNetUnfolderBase]: For 258/277 co-relation queries the response was YES. [2023-11-29 04:10:48,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 1039 events. 365/1039 cut-off events. For 258/277 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7102 event pairs, 234 based on Foata normal form. 15/845 useless extension candidates. Maximal degree in co-relation 1830. Up to 566 conditions per place. [2023-11-29 04:10:48,989 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 32 selfloop transitions, 21 changer transitions 0/87 dead transitions. [2023-11-29 04:10:48,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 438 flow [2023-11-29 04:10:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:10:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2023-11-29 04:10:48,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851272015655578 [2023-11-29 04:10:48,992 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 299 transitions. [2023-11-29 04:10:48,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 299 transitions. [2023-11-29 04:10:48,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:48,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 299 transitions. [2023-11-29 04:10:48,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:10:48,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 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 04:10:48,996 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 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 04:10:48,996 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 352 flow. Second operand 7 states and 299 transitions. [2023-11-29 04:10:48,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 438 flow [2023-11-29 04:10:48,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:10:49,001 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 374 flow [2023-11-29 04:10:49,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=374, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2023-11-29 04:10:49,003 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2023-11-29 04:10:49,003 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 374 flow [2023-11-29 04:10:49,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.63636363636363) internal successors, (414), 11 states have internal predecessors, (414), 0 states have call successors, (0), 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 04:10:49,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:49,003 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 04:10:49,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:10:49,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:49,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:49,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1656776856, now seen corresponding path program 2 times [2023-11-29 04:10:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:49,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781433362] [2023-11-29 04:10:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:49,343 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 04:10:49,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:49,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781433362] [2023-11-29 04:10:49,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781433362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:49,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044378220] [2023-11-29 04:10:49,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:10:49,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:49,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:49,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:49,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:10:49,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:10:49,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:10:49,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:10:49,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:49,470 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 04:10:49,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:49,521 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 04:10:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044378220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:49,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:10:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-29 04:10:49,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981328423] [2023-11-29 04:10:49,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:49,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:10:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:10:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:10:49,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2023-11-29 04:10:49,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 374 flow. Second operand has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 0 states have call successors, (0), 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 04:10:49,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:49,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2023-11-29 04:10:49,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:49,916 INFO L124 PetriNetUnfolderBase]: 367/1041 cut-off events. [2023-11-29 04:10:49,916 INFO L125 PetriNetUnfolderBase]: For 288/307 co-relation queries the response was YES. [2023-11-29 04:10:49,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 1041 events. 367/1041 cut-off events. For 288/307 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7128 event pairs, 234 based on Foata normal form. 13/845 useless extension candidates. Maximal degree in co-relation 1842. Up to 561 conditions per place. [2023-11-29 04:10:49,922 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 26 selfloop transitions, 29 changer transitions 0/89 dead transitions. [2023-11-29 04:10:49,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 89 transitions, 492 flow [2023-11-29 04:10:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:10:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:10:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 523 transitions. [2023-11-29 04:10:49,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511064278187566 [2023-11-29 04:10:49,925 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 523 transitions. [2023-11-29 04:10:49,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 523 transitions. [2023-11-29 04:10:49,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:49,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 523 transitions. [2023-11-29 04:10:49,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.23076923076923) internal successors, (523), 13 states have internal predecessors, (523), 0 states have call successors, (0), 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 04:10:49,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 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 04:10:49,929 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 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 04:10:49,929 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 374 flow. Second operand 13 states and 523 transitions. [2023-11-29 04:10:49,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 89 transitions, 492 flow [2023-11-29 04:10:49,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 454 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-29 04:10:49,933 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 402 flow [2023-11-29 04:10:49,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2023-11-29 04:10:49,934 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2023-11-29 04:10:49,934 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 402 flow [2023-11-29 04:10:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 37.333333333333336) internal successors, (560), 15 states have internal predecessors, (560), 0 states have call successors, (0), 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 04:10:49,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:49,935 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:49,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:10:50,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:50,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:50,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:50,139 INFO L85 PathProgramCache]: Analyzing trace with hash 423227966, now seen corresponding path program 2 times [2023-11-29 04:10:50,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:50,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946993129] [2023-11-29 04:10:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:50,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:10:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946993129] [2023-11-29 04:10:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946993129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584202659] [2023-11-29 04:10:50,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:10:50,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:50,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:50,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:50,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:10:50,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:10:50,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:10:50,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:10:50,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:10:50,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:10:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584202659] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:50,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:10:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-29 04:10:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493376240] [2023-11-29 04:10:50,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:50,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:10:50,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:50,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:10:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:10:50,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2023-11-29 04:10:50,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 402 flow. Second operand has 23 states, 23 states have (on average 37.30434782608695) internal successors, (858), 23 states have internal predecessors, (858), 0 states have call successors, (0), 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 04:10:50,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:10:50,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2023-11-29 04:10:50,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:10:51,126 INFO L124 PetriNetUnfolderBase]: 363/1037 cut-off events. [2023-11-29 04:10:51,127 INFO L125 PetriNetUnfolderBase]: For 284/303 co-relation queries the response was YES. [2023-11-29 04:10:51,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1037 events. 363/1037 cut-off events. For 284/303 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7079 event pairs, 234 based on Foata normal form. 13/842 useless extension candidates. Maximal degree in co-relation 1767. Up to 561 conditions per place. [2023-11-29 04:10:51,134 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 29 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2023-11-29 04:10:51,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 85 transitions, 474 flow [2023-11-29 04:10:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:10:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:10:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 449 transitions. [2023-11-29 04:10:51,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591531755915318 [2023-11-29 04:10:51,137 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 449 transitions. [2023-11-29 04:10:51,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 449 transitions. [2023-11-29 04:10:51,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:10:51,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 449 transitions. [2023-11-29 04:10:51,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 40.81818181818182) internal successors, (449), 11 states have internal predecessors, (449), 0 states have call successors, (0), 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 04:10:51,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 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 04:10:51,141 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 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 04:10:51,142 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 402 flow. Second operand 11 states and 449 transitions. [2023-11-29 04:10:51,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 85 transitions, 474 flow [2023-11-29 04:10:51,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 354 flow, removed 7 selfloop flow, removed 14 redundant places. [2023-11-29 04:10:51,145 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 296 flow [2023-11-29 04:10:51,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=296, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2023-11-29 04:10:51,146 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 19 predicate places. [2023-11-29 04:10:51,146 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 296 flow [2023-11-29 04:10:51,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 37.30434782608695) internal successors, (858), 23 states have internal predecessors, (858), 0 states have call successors, (0), 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 04:10:51,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:10:51,147 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:51,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:10:51,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:51,353 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:10:51,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash -224452994, now seen corresponding path program 3 times [2023-11-29 04:10:51,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:51,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619689802] [2023-11-29 04:10:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:51,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:10:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619689802] [2023-11-29 04:10:52,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619689802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032078888] [2023-11-29 04:10:52,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:10:52,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:52,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:52,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:52,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:10:52,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:10:52,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:10:52,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 04:10:52,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:52,649 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 04:10:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:52,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:10:52,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:10:52,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:10:52,884 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-29 04:10:52,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2023-11-29 04:10:53,032 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-29 04:10:53,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2023-11-29 04:10:53,200 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 15 treesize of output 7 [2023-11-29 04:10:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:10:53,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:16,098 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 42 treesize of output 40 [2023-11-29 04:12:16,110 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 6678 treesize of output 6646 [2023-11-29 04:12:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 33 refuted. 2 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:12:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032078888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:16,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:12:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2023-11-29 04:12:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924518785] [2023-11-29 04:12:16,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 04:12:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:16,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 04:12:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1240, Unknown=17, NotChecked=0, Total=1482 [2023-11-29 04:12:19,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:24,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:28,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:31,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:33,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:36,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:39,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:40,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:12:40,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2023-11-29 04:12:40,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 296 flow. Second operand has 39 states, 39 states have (on average 26.71794871794872) internal successors, (1042), 39 states have internal predecessors, (1042), 0 states have call successors, (0), 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 04:12:40,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:40,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2023-11-29 04:12:40,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:41,892 INFO L124 PetriNetUnfolderBase]: 1715/3152 cut-off events. [2023-11-29 04:12:41,892 INFO L125 PetriNetUnfolderBase]: For 324/328 co-relation queries the response was YES. [2023-11-29 04:12:41,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 3152 events. 1715/3152 cut-off events. For 324/328 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 19700 event pairs, 371 based on Foata normal form. 4/2779 useless extension candidates. Maximal degree in co-relation 6521. Up to 941 conditions per place. [2023-11-29 04:12:41,916 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 111 selfloop transitions, 35 changer transitions 0/169 dead transitions. [2023-11-29 04:12:41,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 169 transitions, 793 flow [2023-11-29 04:12:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:12:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:12:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 513 transitions. [2023-11-29 04:12:41,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684931506849315 [2023-11-29 04:12:41,919 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 513 transitions. [2023-11-29 04:12:41,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 513 transitions. [2023-11-29 04:12:41,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:41,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 513 transitions. [2023-11-29 04:12:41,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 34.2) internal successors, (513), 15 states have internal predecessors, (513), 0 states have call successors, (0), 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 04:12:41,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 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 04:12:41,924 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 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 04:12:41,925 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 296 flow. Second operand 15 states and 513 transitions. [2023-11-29 04:12:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 169 transitions, 793 flow [2023-11-29 04:12:41,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 169 transitions, 749 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 04:12:41,932 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 384 flow [2023-11-29 04:12:41,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=384, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2023-11-29 04:12:41,933 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 26 predicate places. [2023-11-29 04:12:41,933 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 384 flow [2023-11-29 04:12:41,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 26.71794871794872) internal successors, (1042), 39 states have internal predecessors, (1042), 0 states have call successors, (0), 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 04:12:41,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:41,934 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:41,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:42,135 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:12:42,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash 936202197, now seen corresponding path program 1 times [2023-11-29 04:12:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735847691] [2023-11-29 04:12:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:12:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735847691] [2023-11-29 04:12:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735847691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:12:42,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:12:42,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:12:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125760616] [2023-11-29 04:12:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:12:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:12:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:12:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:12:42,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2023-11-29 04:12:42,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 04:12:42,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:42,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2023-11-29 04:12:42,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:42,767 INFO L124 PetriNetUnfolderBase]: 1407/3312 cut-off events. [2023-11-29 04:12:42,767 INFO L125 PetriNetUnfolderBase]: For 2526/2679 co-relation queries the response was YES. [2023-11-29 04:12:42,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7125 conditions, 3312 events. 1407/3312 cut-off events. For 2526/2679 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 25413 event pairs, 498 based on Foata normal form. 153/2931 useless extension candidates. Maximal degree in co-relation 6320. Up to 1159 conditions per place. [2023-11-29 04:12:42,795 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 104 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2023-11-29 04:12:42,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 138 transitions, 842 flow [2023-11-29 04:12:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:12:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:12:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2023-11-29 04:12:42,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6952054794520548 [2023-11-29 04:12:42,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 203 transitions. [2023-11-29 04:12:42,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 203 transitions. [2023-11-29 04:12:42,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:42,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 203 transitions. [2023-11-29 04:12:42,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.75) internal successors, (203), 4 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 04:12:42,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:12:42,799 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:12:42,799 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 384 flow. Second operand 4 states and 203 transitions. [2023-11-29 04:12:42,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 138 transitions, 842 flow [2023-11-29 04:12:42,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 787 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-29 04:12:42,806 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 367 flow [2023-11-29 04:12:42,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=367, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2023-11-29 04:12:42,807 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 22 predicate places. [2023-11-29 04:12:42,808 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 367 flow [2023-11-29 04:12:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 04:12:42,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:42,808 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:42,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:12:42,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:12:42,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1631860810, now seen corresponding path program 1 times [2023-11-29 04:12:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:42,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192440711] [2023-11-29 04:12:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:42,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:12:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:43,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192440711] [2023-11-29 04:12:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192440711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:12:43,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063636837] [2023-11-29 04:12:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:43,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:43,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:43,673 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:43,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:12:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:43,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 04:12:43,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:43,833 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 04:12:43,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:43,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:12:43,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:43,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:12:43,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:43,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:12:43,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:43,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:12:44,014 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 17 treesize of output 9 [2023-11-29 04:12:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:12:44,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:44,726 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 23 treesize of output 21 [2023-11-29 04:12:44,731 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 114 treesize of output 110 [2023-11-29 04:12:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 04:12:44,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063636837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:44,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:12:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 24 [2023-11-29 04:12:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104796848] [2023-11-29 04:12:44,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 04:12:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 04:12:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:12:44,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2023-11-29 04:12:44,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 367 flow. Second operand has 25 states, 25 states have (on average 32.52) internal successors, (813), 25 states have internal predecessors, (813), 0 states have call successors, (0), 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 04:12:44,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:44,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2023-11-29 04:12:44,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:45,891 INFO L124 PetriNetUnfolderBase]: 1344/3031 cut-off events. [2023-11-29 04:12:45,891 INFO L125 PetriNetUnfolderBase]: For 2377/2489 co-relation queries the response was YES. [2023-11-29 04:12:45,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7107 conditions, 3031 events. 1344/3031 cut-off events. For 2377/2489 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 22060 event pairs, 372 based on Foata normal form. 86/2828 useless extension candidates. Maximal degree in co-relation 3812. Up to 781 conditions per place. [2023-11-29 04:12:45,917 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 96 selfloop transitions, 35 changer transitions 0/160 dead transitions. [2023-11-29 04:12:45,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 160 transitions, 848 flow [2023-11-29 04:12:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:12:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 04:12:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 641 transitions. [2023-11-29 04:12:45,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165189363416599 [2023-11-29 04:12:45,921 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 641 transitions. [2023-11-29 04:12:45,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 641 transitions. [2023-11-29 04:12:45,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:45,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 641 transitions. [2023-11-29 04:12:45,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 37.705882352941174) internal successors, (641), 17 states have internal predecessors, (641), 0 states have call successors, (0), 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 04:12:45,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 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 04:12:45,926 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 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 04:12:45,927 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 367 flow. Second operand 17 states and 641 transitions. [2023-11-29 04:12:45,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 160 transitions, 848 flow [2023-11-29 04:12:45,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 160 transitions, 848 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:12:45,935 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 459 flow [2023-11-29 04:12:45,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=459, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2023-11-29 04:12:45,936 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2023-11-29 04:12:45,937 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 459 flow [2023-11-29 04:12:45,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 32.52) internal successors, (813), 25 states have internal predecessors, (813), 0 states have call successors, (0), 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 04:12:45,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:45,937 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:45,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:12:46,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:12:46,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:12:46,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1042502136, now seen corresponding path program 1 times [2023-11-29 04:12:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:46,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681959742] [2023-11-29 04:12:46,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:46,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:12:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681959742] [2023-11-29 04:12:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681959742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:12:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549177475] [2023-11-29 04:12:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:47,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:47,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:47,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:47,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:12:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:47,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-29 04:12:47,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:47,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 04:12:47,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:47,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:12:47,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:47,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:47,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:12:47,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:47,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:47,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:47,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:12:47,364 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 04:12:47,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:12:47,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:12:47,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:12:47,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:12:47,710 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:12:47,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:12:47,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:12:47,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:12:47,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:12:48,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:12:48,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:12:48,243 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 15 treesize of output 7 [2023-11-29 04:12:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:48,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:48,340 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_422 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_422) c_~o_0~0.base) c_~o_0~0.offset) 9223372039002259456)) is different from false [2023-11-29 04:12:49,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:12:49,230 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 75 [2023-11-29 04:12:49,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:12:49,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 04:12:49,245 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 9 treesize of output 7 [2023-11-29 04:12:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 22 trivial. 13 not checked. [2023-11-29 04:12:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549177475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:49,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:12:49,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 14] total 48 [2023-11-29 04:12:49,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567774163] [2023-11-29 04:12:49,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:49,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 04:12:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 04:12:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=2046, Unknown=5, NotChecked=94, Total=2450 [2023-11-29 04:12:49,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2023-11-29 04:12:49,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 459 flow. Second operand has 50 states, 50 states have (on average 26.92) internal successors, (1346), 50 states have internal predecessors, (1346), 0 states have call successors, (0), 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 04:12:49,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:49,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2023-11-29 04:12:49,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:51,982 INFO L124 PetriNetUnfolderBase]: 4038/7512 cut-off events. [2023-11-29 04:12:51,982 INFO L125 PetriNetUnfolderBase]: For 10907/11336 co-relation queries the response was YES. [2023-11-29 04:12:51,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20284 conditions, 7512 events. 4038/7512 cut-off events. For 10907/11336 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 54354 event pairs, 945 based on Foata normal form. 265/7121 useless extension candidates. Maximal degree in co-relation 18687. Up to 2238 conditions per place. [2023-11-29 04:12:52,022 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 158 selfloop transitions, 37 changer transitions 0/221 dead transitions. [2023-11-29 04:12:52,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 221 transitions, 1489 flow [2023-11-29 04:12:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 04:12:52,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 04:12:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 923 transitions. [2023-11-29 04:12:52,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4078656650463986 [2023-11-29 04:12:52,028 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 923 transitions. [2023-11-29 04:12:52,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 923 transitions. [2023-11-29 04:12:52,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:52,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 923 transitions. [2023-11-29 04:12:52,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 29.774193548387096) internal successors, (923), 31 states have internal predecessors, (923), 0 states have call successors, (0), 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 04:12:52,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:12:52,037 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:12:52,038 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 459 flow. Second operand 31 states and 923 transitions. [2023-11-29 04:12:52,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 221 transitions, 1489 flow [2023-11-29 04:12:52,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 221 transitions, 1379 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-11-29 04:12:52,056 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 541 flow [2023-11-29 04:12:52,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=541, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2023-11-29 04:12:52,057 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 59 predicate places. [2023-11-29 04:12:52,057 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 541 flow [2023-11-29 04:12:52,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 26.92) internal successors, (1346), 50 states have internal predecessors, (1346), 0 states have call successors, (0), 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 04:12:52,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:52,059 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:52,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:12:52,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:12:52,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:12:52,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash -951922656, now seen corresponding path program 1 times [2023-11-29 04:12:52,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:52,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203148818] [2023-11-29 04:12:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:12:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:53,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203148818] [2023-11-29 04:12:53,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203148818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:12:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302807087] [2023-11-29 04:12:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:53,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:53,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:53,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:53,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:12:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:53,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 04:12:53,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:53,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 04:12:53,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:53,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:12:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:53,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:53,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:12:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:53,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:53,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:12:53,406 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 04:12:53,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:53,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:53,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:53,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:53,755 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:12:53,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:12:53,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:53,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:54,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:54,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:54,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:54,338 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 17 treesize of output 9 [2023-11-29 04:12:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:12:54,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:12:54,496 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_500 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_500) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2023-11-29 04:12:55,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:12:55,295 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2023-11-29 04:12:55,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:12:55,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-29 04:12:55,307 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 11 treesize of output 9 [2023-11-29 04:12:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 33 refuted. 2 times theorem prover too weak. 22 trivial. 13 not checked. [2023-11-29 04:12:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302807087] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:12:55,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:12:55,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 15] total 50 [2023-11-29 04:12:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989227506] [2023-11-29 04:12:55,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:12:55,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 04:12:55,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:12:55,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 04:12:55,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=2234, Unknown=7, NotChecked=98, Total=2652 [2023-11-29 04:12:55,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 73 [2023-11-29 04:12:55,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 541 flow. Second operand has 52 states, 52 states have (on average 24.846153846153847) internal successors, (1292), 52 states have internal predecessors, (1292), 0 states have call successors, (0), 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 04:12:55,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:12:55,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 73 [2023-11-29 04:12:55,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:12:57,865 INFO L124 PetriNetUnfolderBase]: 3934/7360 cut-off events. [2023-11-29 04:12:57,865 INFO L125 PetriNetUnfolderBase]: For 10366/10876 co-relation queries the response was YES. [2023-11-29 04:12:57,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20925 conditions, 7360 events. 3934/7360 cut-off events. For 10366/10876 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 53502 event pairs, 966 based on Foata normal form. 304/7169 useless extension candidates. Maximal degree in co-relation 17927. Up to 2015 conditions per place. [2023-11-29 04:12:57,909 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 238 selfloop transitions, 42 changer transitions 0/302 dead transitions. [2023-11-29 04:12:57,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 302 transitions, 2110 flow [2023-11-29 04:12:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 04:12:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 04:12:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1006 transitions. [2023-11-29 04:12:57,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39373776908023483 [2023-11-29 04:12:57,914 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1006 transitions. [2023-11-29 04:12:57,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1006 transitions. [2023-11-29 04:12:57,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:12:57,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1006 transitions. [2023-11-29 04:12:57,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 28.742857142857144) internal successors, (1006), 35 states have internal predecessors, (1006), 0 states have call successors, (0), 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 04:12:57,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 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 04:12:57,923 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 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 04:12:57,923 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 541 flow. Second operand 35 states and 1006 transitions. [2023-11-29 04:12:57,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 302 transitions, 2110 flow [2023-11-29 04:12:57,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 302 transitions, 2011 flow, removed 9 selfloop flow, removed 14 redundant places. [2023-11-29 04:12:57,949 INFO L231 Difference]: Finished difference. Result has 153 places, 111 transitions, 590 flow [2023-11-29 04:12:57,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=590, PETRI_PLACES=153, PETRI_TRANSITIONS=111} [2023-11-29 04:12:57,950 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 85 predicate places. [2023-11-29 04:12:57,950 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 111 transitions, 590 flow [2023-11-29 04:12:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 24.846153846153847) internal successors, (1292), 52 states have internal predecessors, (1292), 0 states have call successors, (0), 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 04:12:57,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:12:57,951 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:12:57,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:12:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:58,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:12:58,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:12:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2042141209, now seen corresponding path program 1 times [2023-11-29 04:12:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:12:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458026441] [2023-11-29 04:12:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:12:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:12:59,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:12:59,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458026441] [2023-11-29 04:12:59,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458026441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:12:59,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357949421] [2023-11-29 04:12:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:12:59,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:12:59,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:12:59,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:12:59,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:12:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:12:59,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-29 04:12:59,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:12:59,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 04:12:59,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:59,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:59,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:59,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:12:59,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:59,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:59,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:12:59,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:12:59,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:12:59,232 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 04:12:59,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:59,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:59,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:59,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:12:59,551 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:12:59,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:12:59,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:59,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:59,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:59,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:12:59,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:13:00,026 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 17 treesize of output 9 [2023-11-29 04:13:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:00,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:00,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:13:00,981 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2023-11-29 04:13:00,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:13:00,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-29 04:13:00,992 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 11 treesize of output 9 [2023-11-29 04:13:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:13:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357949421] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:01,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:01,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 14] total 48 [2023-11-29 04:13:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842389858] [2023-11-29 04:13:01,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:01,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 04:13:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 04:13:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=2128, Unknown=7, NotChecked=0, Total=2450 [2023-11-29 04:13:01,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2023-11-29 04:13:01,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 111 transitions, 590 flow. Second operand has 50 states, 50 states have (on average 26.92) internal successors, (1346), 50 states have internal predecessors, (1346), 0 states have call successors, (0), 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 04:13:01,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:01,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2023-11-29 04:13:01,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:03,347 INFO L124 PetriNetUnfolderBase]: 3959/7421 cut-off events. [2023-11-29 04:13:03,347 INFO L125 PetriNetUnfolderBase]: For 18304/18804 co-relation queries the response was YES. [2023-11-29 04:13:03,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22615 conditions, 7421 events. 3959/7421 cut-off events. For 18304/18804 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 54071 event pairs, 1231 based on Foata normal form. 312/7138 useless extension candidates. Maximal degree in co-relation 20850. Up to 2456 conditions per place. [2023-11-29 04:13:03,386 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 162 selfloop transitions, 37 changer transitions 0/227 dead transitions. [2023-11-29 04:13:03,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 227 transitions, 1732 flow [2023-11-29 04:13:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 04:13:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 04:13:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 914 transitions. [2023-11-29 04:13:03,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40388864339372516 [2023-11-29 04:13:03,389 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 914 transitions. [2023-11-29 04:13:03,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 914 transitions. [2023-11-29 04:13:03,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:03,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 914 transitions. [2023-11-29 04:13:03,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 29.483870967741936) internal successors, (914), 31 states have internal predecessors, (914), 0 states have call successors, (0), 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 04:13:03,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:13:03,394 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:13:03,394 INFO L175 Difference]: Start difference. First operand has 153 places, 111 transitions, 590 flow. Second operand 31 states and 914 transitions. [2023-11-29 04:13:03,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 227 transitions, 1732 flow [2023-11-29 04:13:03,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 227 transitions, 1574 flow, removed 15 selfloop flow, removed 29 redundant places. [2023-11-29 04:13:03,414 INFO L231 Difference]: Finished difference. Result has 156 places, 113 transitions, 608 flow [2023-11-29 04:13:03,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=608, PETRI_PLACES=156, PETRI_TRANSITIONS=113} [2023-11-29 04:13:03,414 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 88 predicate places. [2023-11-29 04:13:03,414 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 113 transitions, 608 flow [2023-11-29 04:13:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 26.92) internal successors, (1346), 50 states have internal predecessors, (1346), 0 states have call successors, (0), 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 04:13:03,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:03,415 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:03,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:13:03,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:03,616 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:03,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash 555169549, now seen corresponding path program 1 times [2023-11-29 04:13:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792468113] [2023-11-29 04:13:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:13:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792468113] [2023-11-29 04:13:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792468113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:04,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697654927] [2023-11-29 04:13:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:04,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:04,495 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:04,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:13:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:04,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-29 04:13:04,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:04,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 04:13:04,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:04,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:13:04,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:04,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:13:04,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:04,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:13:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:04,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:13:04,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:04,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:13:04,655 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 04:13:04,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:13:04,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:13:04,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:13:04,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:13:04,906 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:13:04,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:13:04,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:13:05,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:13:05,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:13:05,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:13:05,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:13:05,348 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 15 treesize of output 7 [2023-11-29 04:13:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:05,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:05,513 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_655 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_655) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2023-11-29 04:13:06,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:13:06,338 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 75 [2023-11-29 04:13:06,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:13:06,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 04:13:06,348 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 9 treesize of output 7 [2023-11-29 04:13:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 22 trivial. 13 not checked. [2023-11-29 04:13:06,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697654927] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:06,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:06,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25, 16] total 48 [2023-11-29 04:13:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750270545] [2023-11-29 04:13:06,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:06,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 04:13:06,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:06,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 04:13:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2059, Unknown=7, NotChecked=94, Total=2450 [2023-11-29 04:13:06,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 73 [2023-11-29 04:13:06,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 113 transitions, 608 flow. Second operand has 50 states, 50 states have (on average 24.84) internal successors, (1242), 50 states have internal predecessors, (1242), 0 states have call successors, (0), 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 04:13:06,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:06,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 73 [2023-11-29 04:13:06,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:09,221 INFO L124 PetriNetUnfolderBase]: 4238/7779 cut-off events. [2023-11-29 04:13:09,221 INFO L125 PetriNetUnfolderBase]: For 14875/15287 co-relation queries the response was YES. [2023-11-29 04:13:09,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24419 conditions, 7779 events. 4238/7779 cut-off events. For 14875/15287 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 55985 event pairs, 1180 based on Foata normal form. 500/7826 useless extension candidates. Maximal degree in co-relation 21676. Up to 2381 conditions per place. [2023-11-29 04:13:09,280 INFO L140 encePairwiseOnDemand]: 54/73 looper letters, 256 selfloop transitions, 44 changer transitions 0/326 dead transitions. [2023-11-29 04:13:09,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 326 transitions, 2465 flow [2023-11-29 04:13:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 04:13:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-29 04:13:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1035 transitions. [2023-11-29 04:13:09,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3938356164383562 [2023-11-29 04:13:09,284 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1035 transitions. [2023-11-29 04:13:09,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1035 transitions. [2023-11-29 04:13:09,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:09,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1035 transitions. [2023-11-29 04:13:09,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 28.75) internal successors, (1035), 36 states have internal predecessors, (1035), 0 states have call successors, (0), 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 04:13:09,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 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 04:13:09,292 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 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 04:13:09,292 INFO L175 Difference]: Start difference. First operand has 156 places, 113 transitions, 608 flow. Second operand 36 states and 1035 transitions. [2023-11-29 04:13:09,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 326 transitions, 2465 flow [2023-11-29 04:13:09,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 326 transitions, 2300 flow, removed 1 selfloop flow, removed 28 redundant places. [2023-11-29 04:13:09,327 INFO L231 Difference]: Finished difference. Result has 168 places, 120 transitions, 689 flow [2023-11-29 04:13:09,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=689, PETRI_PLACES=168, PETRI_TRANSITIONS=120} [2023-11-29 04:13:09,327 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 100 predicate places. [2023-11-29 04:13:09,327 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 120 transitions, 689 flow [2023-11-29 04:13:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 24.84) internal successors, (1242), 50 states have internal predecessors, (1242), 0 states have call successors, (0), 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 04:13:09,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:09,328 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:09,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:13:09,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:13:09,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:09,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1118132150, now seen corresponding path program 1 times [2023-11-29 04:13:09,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:09,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978983803] [2023-11-29 04:13:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:09,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:13:10,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978983803] [2023-11-29 04:13:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978983803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863806527] [2023-11-29 04:13:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:10,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:10,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:10,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:10,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:13:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:10,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 04:13:10,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:10,484 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 04:13:10,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:13:10,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:13:10,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:13:10,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:10,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:13:10,662 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 17 treesize of output 9 [2023-11-29 04:13:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:13:10,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:11,405 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 23 treesize of output 21 [2023-11-29 04:13:11,408 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 52 treesize of output 50 [2023-11-29 04:13:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 04:13:11,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863806527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:11,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:11,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 26 [2023-11-29 04:13:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333791433] [2023-11-29 04:13:11,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:13:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:13:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:13:11,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 73 [2023-11-29 04:13:11,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 120 transitions, 689 flow. Second operand has 27 states, 27 states have (on average 28.703703703703702) internal successors, (775), 27 states have internal predecessors, (775), 0 states have call successors, (0), 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 04:13:11,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:11,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 73 [2023-11-29 04:13:11,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:13,067 INFO L124 PetriNetUnfolderBase]: 3659/7160 cut-off events. [2023-11-29 04:13:13,067 INFO L125 PetriNetUnfolderBase]: For 21283/21818 co-relation queries the response was YES. [2023-11-29 04:13:13,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23702 conditions, 7160 events. 3659/7160 cut-off events. For 21283/21818 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 53726 event pairs, 989 based on Foata normal form. 345/7061 useless extension candidates. Maximal degree in co-relation 22247. Up to 2036 conditions per place. [2023-11-29 04:13:13,126 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 272 selfloop transitions, 42 changer transitions 0/348 dead transitions. [2023-11-29 04:13:13,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 348 transitions, 3001 flow [2023-11-29 04:13:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:13:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:13:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 744 transitions. [2023-11-29 04:13:13,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48532289628180036 [2023-11-29 04:13:13,130 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 744 transitions. [2023-11-29 04:13:13,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 744 transitions. [2023-11-29 04:13:13,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:13,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 744 transitions. [2023-11-29 04:13:13,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 35.42857142857143) internal successors, (744), 21 states have internal predecessors, (744), 0 states have call successors, (0), 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 04:13:13,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 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 04:13:13,137 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 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 04:13:13,137 INFO L175 Difference]: Start difference. First operand has 168 places, 120 transitions, 689 flow. Second operand 21 states and 744 transitions. [2023-11-29 04:13:13,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 348 transitions, 3001 flow [2023-11-29 04:13:13,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 348 transitions, 2757 flow, removed 21 selfloop flow, removed 29 redundant places. [2023-11-29 04:13:13,178 INFO L231 Difference]: Finished difference. Result has 165 places, 124 transitions, 737 flow [2023-11-29 04:13:13,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=737, PETRI_PLACES=165, PETRI_TRANSITIONS=124} [2023-11-29 04:13:13,179 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 97 predicate places. [2023-11-29 04:13:13,179 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 124 transitions, 737 flow [2023-11-29 04:13:13,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 28.703703703703702) internal successors, (775), 27 states have internal predecessors, (775), 0 states have call successors, (0), 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 04:13:13,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:13,180 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:13,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:13:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:13,381 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:13,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash 30387650, now seen corresponding path program 1 times [2023-11-29 04:13:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:13,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060769678] [2023-11-29 04:13:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:13:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060769678] [2023-11-29 04:13:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060769678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29958268] [2023-11-29 04:13:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:13,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:13:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:13:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:13:13,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2023-11-29 04:13:13,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 124 transitions, 737 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 04:13:13,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:13,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2023-11-29 04:13:13,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:14,272 INFO L124 PetriNetUnfolderBase]: 2161/5759 cut-off events. [2023-11-29 04:13:14,272 INFO L125 PetriNetUnfolderBase]: For 14671/14855 co-relation queries the response was YES. [2023-11-29 04:13:14,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18877 conditions, 5759 events. 2161/5759 cut-off events. For 14671/14855 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 50624 event pairs, 1154 based on Foata normal form. 225/5725 useless extension candidates. Maximal degree in co-relation 17750. Up to 1922 conditions per place. [2023-11-29 04:13:14,308 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 123 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2023-11-29 04:13:14,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 173 transitions, 1346 flow [2023-11-29 04:13:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:13:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:13:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2023-11-29 04:13:14,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7568493150684932 [2023-11-29 04:13:14,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 221 transitions. [2023-11-29 04:13:14,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 221 transitions. [2023-11-29 04:13:14,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:14,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 221 transitions. [2023-11-29 04:13:14,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:14,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:14,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:14,312 INFO L175 Difference]: Start difference. First operand has 165 places, 124 transitions, 737 flow. Second operand 4 states and 221 transitions. [2023-11-29 04:13:14,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 173 transitions, 1346 flow [2023-11-29 04:13:14,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 173 transitions, 1228 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-11-29 04:13:14,404 INFO L231 Difference]: Finished difference. Result has 154 places, 124 transitions, 677 flow [2023-11-29 04:13:14,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=677, PETRI_PLACES=154, PETRI_TRANSITIONS=124} [2023-11-29 04:13:14,405 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 86 predicate places. [2023-11-29 04:13:14,405 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 124 transitions, 677 flow [2023-11-29 04:13:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 04:13:14,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:14,405 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:14,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:13:14,406 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:14,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash 977704742, now seen corresponding path program 1 times [2023-11-29 04:13:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847140054] [2023-11-29 04:13:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:13:14,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:14,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847140054] [2023-11-29 04:13:14,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847140054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:14,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:14,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:14,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621137944] [2023-11-29 04:13:14,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:14,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:13:14,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:13:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:13:14,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2023-11-29 04:13:14,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 124 transitions, 677 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 04:13:14,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:14,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2023-11-29 04:13:14,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:15,296 INFO L124 PetriNetUnfolderBase]: 2768/6252 cut-off events. [2023-11-29 04:13:15,296 INFO L125 PetriNetUnfolderBase]: For 16402/16635 co-relation queries the response was YES. [2023-11-29 04:13:15,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20832 conditions, 6252 events. 2768/6252 cut-off events. For 16402/16635 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 50796 event pairs, 1068 based on Foata normal form. 309/6357 useless extension candidates. Maximal degree in co-relation 19755. Up to 2312 conditions per place. [2023-11-29 04:13:15,332 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 119 selfloop transitions, 10 changer transitions 0/167 dead transitions. [2023-11-29 04:13:15,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 167 transitions, 1221 flow [2023-11-29 04:13:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:13:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:13:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2023-11-29 04:13:15,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.678082191780822 [2023-11-29 04:13:15,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 198 transitions. [2023-11-29 04:13:15,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 198 transitions. [2023-11-29 04:13:15,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:15,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 198 transitions. [2023-11-29 04:13:15,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 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 04:13:15,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:15,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:15,336 INFO L175 Difference]: Start difference. First operand has 154 places, 124 transitions, 677 flow. Second operand 4 states and 198 transitions. [2023-11-29 04:13:15,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 167 transitions, 1221 flow [2023-11-29 04:13:15,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 167 transitions, 1203 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:13:15,372 INFO L231 Difference]: Finished difference. Result has 152 places, 121 transitions, 659 flow [2023-11-29 04:13:15,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=659, PETRI_PLACES=152, PETRI_TRANSITIONS=121} [2023-11-29 04:13:15,372 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 84 predicate places. [2023-11-29 04:13:15,372 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 121 transitions, 659 flow [2023-11-29 04:13:15,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 04:13:15,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:15,373 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:15,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:13:15,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:15,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash -302357444, now seen corresponding path program 1 times [2023-11-29 04:13:15,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:15,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416034065] [2023-11-29 04:13:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:15,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:13:16,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:16,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416034065] [2023-11-29 04:13:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416034065] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052343126] [2023-11-29 04:13:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:16,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:16,255 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:16,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:13:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:16,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 04:13:16,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:16,402 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 04:13:16,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:16,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:13:16,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:16,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:13:16,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:16,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:13:16,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:16,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:13:16,563 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 15 treesize of output 7 [2023-11-29 04:13:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:13:16,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:17,361 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 21 treesize of output 19 [2023-11-29 04:13:17,365 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 98 treesize of output 94 [2023-11-29 04:13:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 04:13:17,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052343126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:17,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:17,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 11] total 27 [2023-11-29 04:13:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202675821] [2023-11-29 04:13:17,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:17,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 04:13:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 04:13:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:13:17,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2023-11-29 04:13:17,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 121 transitions, 659 flow. Second operand has 28 states, 28 states have (on average 29.607142857142858) internal successors, (829), 28 states have internal predecessors, (829), 0 states have call successors, (0), 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 04:13:17,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:17,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2023-11-29 04:13:17,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:19,414 INFO L124 PetriNetUnfolderBase]: 3497/6934 cut-off events. [2023-11-29 04:13:19,414 INFO L125 PetriNetUnfolderBase]: For 21574/22039 co-relation queries the response was YES. [2023-11-29 04:13:19,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24033 conditions, 6934 events. 3497/6934 cut-off events. For 21574/22039 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 52301 event pairs, 1060 based on Foata normal form. 491/7084 useless extension candidates. Maximal degree in co-relation 22587. Up to 2167 conditions per place. [2023-11-29 04:13:19,460 INFO L140 encePairwiseOnDemand]: 54/73 looper letters, 293 selfloop transitions, 44 changer transitions 0/372 dead transitions. [2023-11-29 04:13:19,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 372 transitions, 3152 flow [2023-11-29 04:13:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:13:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 04:13:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 797 transitions. [2023-11-29 04:13:19,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962640099626401 [2023-11-29 04:13:19,463 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 797 transitions. [2023-11-29 04:13:19,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 797 transitions. [2023-11-29 04:13:19,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:19,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 797 transitions. [2023-11-29 04:13:19,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 36.22727272727273) internal successors, (797), 22 states have internal predecessors, (797), 0 states have call successors, (0), 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 04:13:19,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 73.0) internal successors, (1679), 23 states have internal predecessors, (1679), 0 states have call successors, (0), 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 04:13:19,469 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 73.0) internal successors, (1679), 23 states have internal predecessors, (1679), 0 states have call successors, (0), 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 04:13:19,469 INFO L175 Difference]: Start difference. First operand has 152 places, 121 transitions, 659 flow. Second operand 22 states and 797 transitions. [2023-11-29 04:13:19,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 372 transitions, 3152 flow [2023-11-29 04:13:19,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 372 transitions, 3050 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:13:19,502 INFO L231 Difference]: Finished difference. Result has 176 places, 128 transitions, 794 flow [2023-11-29 04:13:19,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=794, PETRI_PLACES=176, PETRI_TRANSITIONS=128} [2023-11-29 04:13:19,502 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 108 predicate places. [2023-11-29 04:13:19,502 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 128 transitions, 794 flow [2023-11-29 04:13:19,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 29.607142857142858) internal successors, (829), 28 states have internal predecessors, (829), 0 states have call successors, (0), 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 04:13:19,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:19,503 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:19,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:13:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:19,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:19,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 164171760, now seen corresponding path program 1 times [2023-11-29 04:13:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:19,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950190642] [2023-11-29 04:13:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:19,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:13:19,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950190642] [2023-11-29 04:13:19,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950190642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:19,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:19,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351793156] [2023-11-29 04:13:19,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:19,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:13:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:19,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:13:19,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:13:19,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 73 [2023-11-29 04:13:19,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 128 transitions, 794 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 04:13:19,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:19,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 73 [2023-11-29 04:13:19,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:20,662 INFO L124 PetriNetUnfolderBase]: 2930/6351 cut-off events. [2023-11-29 04:13:20,663 INFO L125 PetriNetUnfolderBase]: For 20639/20960 co-relation queries the response was YES. [2023-11-29 04:13:20,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23226 conditions, 6351 events. 2930/6351 cut-off events. For 20639/20960 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 50335 event pairs, 1131 based on Foata normal form. 367/6589 useless extension candidates. Maximal degree in co-relation 21923. Up to 2425 conditions per place. [2023-11-29 04:13:20,697 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 131 selfloop transitions, 10 changer transitions 0/179 dead transitions. [2023-11-29 04:13:20,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 179 transitions, 1430 flow [2023-11-29 04:13:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:13:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:13:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2023-11-29 04:13:20,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.678082191780822 [2023-11-29 04:13:20,698 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 198 transitions. [2023-11-29 04:13:20,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 198 transitions. [2023-11-29 04:13:20,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:20,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 198 transitions. [2023-11-29 04:13:20,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 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 04:13:20,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:20,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:20,700 INFO L175 Difference]: Start difference. First operand has 176 places, 128 transitions, 794 flow. Second operand 4 states and 198 transitions. [2023-11-29 04:13:20,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 179 transitions, 1430 flow [2023-11-29 04:13:20,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 179 transitions, 1338 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-11-29 04:13:20,749 INFO L231 Difference]: Finished difference. Result has 161 places, 125 transitions, 698 flow [2023-11-29 04:13:20,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=161, PETRI_TRANSITIONS=125} [2023-11-29 04:13:20,749 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 93 predicate places. [2023-11-29 04:13:20,749 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 125 transitions, 698 flow [2023-11-29 04:13:20,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 04:13:20,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:20,750 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:20,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:13:20,750 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:20,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash -783145332, now seen corresponding path program 1 times [2023-11-29 04:13:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934317329] [2023-11-29 04:13:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:13:20,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934317329] [2023-11-29 04:13:20,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934317329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:20,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:20,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:13:20,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120791749] [2023-11-29 04:13:20,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:20,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:13:20,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:20,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:13:20,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:13:20,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2023-11-29 04:13:20,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 125 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 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 04:13:20,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:13:20,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2023-11-29 04:13:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:13:21,540 INFO L124 PetriNetUnfolderBase]: 2282/5433 cut-off events. [2023-11-29 04:13:21,541 INFO L125 PetriNetUnfolderBase]: For 15653/15916 co-relation queries the response was YES. [2023-11-29 04:13:21,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19323 conditions, 5433 events. 2282/5433 cut-off events. For 15653/15916 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 44375 event pairs, 989 based on Foata normal form. 271/5653 useless extension candidates. Maximal degree in co-relation 18215. Up to 2063 conditions per place. [2023-11-29 04:13:21,577 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 133 selfloop transitions, 5 changer transitions 0/180 dead transitions. [2023-11-29 04:13:21,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 180 transitions, 1354 flow [2023-11-29 04:13:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:13:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:13:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2023-11-29 04:13:21,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 04:13:21,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 219 transitions. [2023-11-29 04:13:21,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 219 transitions. [2023-11-29 04:13:21,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:21,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 219 transitions. [2023-11-29 04:13:21,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:21,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:21,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:13:21,581 INFO L175 Difference]: Start difference. First operand has 161 places, 125 transitions, 698 flow. Second operand 4 states and 219 transitions. [2023-11-29 04:13:21,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 180 transitions, 1354 flow [2023-11-29 04:13:21,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 180 transitions, 1342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:13:21,647 INFO L231 Difference]: Finished difference. Result has 163 places, 125 transitions, 704 flow [2023-11-29 04:13:21,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=704, PETRI_PLACES=163, PETRI_TRANSITIONS=125} [2023-11-29 04:13:21,648 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 95 predicate places. [2023-11-29 04:13:21,648 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 125 transitions, 704 flow [2023-11-29 04:13:21,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 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 04:13:21,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:13:21,648 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:21,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:13:21,648 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:13:21,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2003738806, now seen corresponding path program 1 times [2023-11-29 04:13:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:21,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219363839] [2023-11-29 04:13:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:13:22,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219363839] [2023-11-29 04:13:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219363839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49208510] [2023-11-29 04:13:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:22,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:22,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:22,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:13:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:22,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 04:13:22,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:22,586 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 04:13:22,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:22,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:13:22,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:22,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:13:22,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:13:22,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:13:22,755 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 15 treesize of output 7 [2023-11-29 04:13:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:13:22,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:52,231 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 37 treesize of output 35 [2023-11-29 04:13:52,235 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 838 treesize of output 822 [2023-11-29 04:13:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:13:52,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49208510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:52,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:52,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 16] total 32 [2023-11-29 04:13:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771893006] [2023-11-29 04:13:52,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:52,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 04:13:52,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 04:13:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=919, Unknown=8, NotChecked=0, Total=1056 [2023-11-29 04:13:56,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:00,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:04,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:08,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:12,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:16,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:20,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:24,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:28,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:32,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:36,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:40,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:44,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:48,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:14:48,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:14:48,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 125 transitions, 704 flow. Second operand has 33 states, 33 states have (on average 24.060606060606062) internal successors, (794), 33 states have internal predecessors, (794), 0 states have call successors, (0), 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 04:14:48,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:48,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:14:48,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:51,747 INFO L124 PetriNetUnfolderBase]: 5983/10919 cut-off events. [2023-11-29 04:14:51,748 INFO L125 PetriNetUnfolderBase]: For 36229/37101 co-relation queries the response was YES. [2023-11-29 04:14:51,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40574 conditions, 10919 events. 5983/10919 cut-off events. For 36229/37101 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 80064 event pairs, 1291 based on Foata normal form. 576/11458 useless extension candidates. Maximal degree in co-relation 38171. Up to 2413 conditions per place. [2023-11-29 04:14:51,841 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 315 selfloop transitions, 44 changer transitions 0/388 dead transitions. [2023-11-29 04:14:51,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 388 transitions, 3204 flow [2023-11-29 04:14:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:14:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:14:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 677 transitions. [2023-11-29 04:14:51,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441617742987606 [2023-11-29 04:14:51,844 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 677 transitions. [2023-11-29 04:14:51,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 677 transitions. [2023-11-29 04:14:51,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:51,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 677 transitions. [2023-11-29 04:14:51,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.23809523809524) internal successors, (677), 21 states have internal predecessors, (677), 0 states have call successors, (0), 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 04:14:51,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 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 04:14:51,848 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 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 04:14:51,848 INFO L175 Difference]: Start difference. First operand has 163 places, 125 transitions, 704 flow. Second operand 21 states and 677 transitions. [2023-11-29 04:14:51,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 388 transitions, 3204 flow [2023-11-29 04:14:51,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 388 transitions, 3150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:14:51,946 INFO L231 Difference]: Finished difference. Result has 184 places, 133 transitions, 877 flow [2023-11-29 04:14:51,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=877, PETRI_PLACES=184, PETRI_TRANSITIONS=133} [2023-11-29 04:14:51,947 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 116 predicate places. [2023-11-29 04:14:51,947 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 133 transitions, 877 flow [2023-11-29 04:14:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 24.060606060606062) internal successors, (794), 33 states have internal predecessors, (794), 0 states have call successors, (0), 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 04:14:51,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:51,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:51,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:14:52,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:52,148 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:14:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1986329874, now seen corresponding path program 1 times [2023-11-29 04:14:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871250818] [2023-11-29 04:14:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:52,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:14:52,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:52,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871250818] [2023-11-29 04:14:52,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871250818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:52,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810904490] [2023-11-29 04:14:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:52,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:52,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:52,848 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:52,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:14:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:52,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-29 04:14:52,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:14:53,156 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 04:14:53,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:14:53,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:14:53,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:14:53,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:14:53,494 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 17 treesize of output 9 [2023-11-29 04:14:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:14:53,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:55,698 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 33 treesize of output 31 [2023-11-29 04:14:55,703 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 982 treesize of output 950 [2023-11-29 04:14:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 04:14:55,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810904490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:14:55,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:14:55,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 14] total 45 [2023-11-29 04:14:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669145390] [2023-11-29 04:14:55,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:14:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 04:14:55,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 04:14:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1856, Unknown=1, NotChecked=0, Total=2070 [2023-11-29 04:14:56,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:14:56,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 133 transitions, 877 flow. Second operand has 46 states, 46 states have (on average 24.0) internal successors, (1104), 46 states have internal predecessors, (1104), 0 states have call successors, (0), 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 04:14:56,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:14:56,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:14:56,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:14:59,576 INFO L124 PetriNetUnfolderBase]: 5904/10391 cut-off events. [2023-11-29 04:14:59,576 INFO L125 PetriNetUnfolderBase]: For 37063/38021 co-relation queries the response was YES. [2023-11-29 04:14:59,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40320 conditions, 10391 events. 5904/10391 cut-off events. For 37063/38021 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 73487 event pairs, 1377 based on Foata normal form. 600/10958 useless extension candidates. Maximal degree in co-relation 38038. Up to 2738 conditions per place. [2023-11-29 04:14:59,664 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 284 selfloop transitions, 41 changer transitions 0/354 dead transitions. [2023-11-29 04:14:59,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 354 transitions, 2972 flow [2023-11-29 04:14:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:14:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 04:14:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 631 transitions. [2023-11-29 04:14:59,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321917808219178 [2023-11-29 04:14:59,666 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 631 transitions. [2023-11-29 04:14:59,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 631 transitions. [2023-11-29 04:14:59,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:14:59,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 631 transitions. [2023-11-29 04:14:59,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 31.55) internal successors, (631), 20 states have internal predecessors, (631), 0 states have call successors, (0), 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 04:14:59,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 73.0) internal successors, (1533), 21 states have internal predecessors, (1533), 0 states have call successors, (0), 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 04:14:59,671 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 73.0) internal successors, (1533), 21 states have internal predecessors, (1533), 0 states have call successors, (0), 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 04:14:59,671 INFO L175 Difference]: Start difference. First operand has 184 places, 133 transitions, 877 flow. Second operand 20 states and 631 transitions. [2023-11-29 04:14:59,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 354 transitions, 2972 flow [2023-11-29 04:14:59,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 354 transitions, 2907 flow, removed 2 selfloop flow, removed 14 redundant places. [2023-11-29 04:14:59,765 INFO L231 Difference]: Finished difference. Result has 190 places, 133 transitions, 899 flow [2023-11-29 04:14:59,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=899, PETRI_PLACES=190, PETRI_TRANSITIONS=133} [2023-11-29 04:14:59,766 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 122 predicate places. [2023-11-29 04:14:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 133 transitions, 899 flow [2023-11-29 04:14:59,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 24.0) internal successors, (1104), 46 states have internal predecessors, (1104), 0 states have call successors, (0), 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 04:14:59,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:14:59,767 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:59,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:14:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 04:14:59,967 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:14:59,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:59,968 INFO L85 PathProgramCache]: Analyzing trace with hash 685121541, now seen corresponding path program 1 times [2023-11-29 04:14:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52744700] [2023-11-29 04:14:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:15:00,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52744700] [2023-11-29 04:15:00,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52744700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:15:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130761381] [2023-11-29 04:15:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:00,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:00,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:00,713 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:00,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:15:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:00,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 04:15:00,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:00,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 04:15:00,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:00,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:15:00,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:00,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:15:00,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:00,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:15:00,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:00,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:15:00,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:00,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:15:00,913 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 04:15:00,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:00,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:15:00,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:00,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:15:01,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:15:01,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:15:01,027 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:15:01,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:15:01,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:15:01,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:15:01,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:15:01,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:15:01,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:15:01,218 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 15 treesize of output 7 [2023-11-29 04:15:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:15:01,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:15:01,363 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1130 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1130) c_~o_0~0.base) (+ c_~o_0~0.offset 4)) 9223372039002259456)) is different from false [2023-11-29 04:16:02,894 INFO L349 Elim1Store]: treesize reduction 139, result has 26.1 percent of original size [2023-11-29 04:16:02,894 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 61 [2023-11-29 04:16:02,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:16:02,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 04:16:02,910 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 11 treesize of output 7 [2023-11-29 04:16:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 13 not checked. [2023-11-29 04:16:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130761381] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:16:03,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:16:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2023-11-29 04:16:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741804282] [2023-11-29 04:16:03,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:16:03,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 04:16:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:16:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 04:16:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1043, Unknown=15, NotChecked=66, Total=1260 [2023-11-29 04:16:03,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:16:03,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 133 transitions, 899 flow. Second operand has 36 states, 36 states have (on average 24.22222222222222) internal successors, (872), 36 states have internal predecessors, (872), 0 states have call successors, (0), 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 04:16:03,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:16:03,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:16:03,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:16:07,908 INFO L124 PetriNetUnfolderBase]: 8927/15838 cut-off events. [2023-11-29 04:16:07,908 INFO L125 PetriNetUnfolderBase]: For 74088/75943 co-relation queries the response was YES. [2023-11-29 04:16:07,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62687 conditions, 15838 events. 8927/15838 cut-off events. For 74088/75943 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 118113 event pairs, 1689 based on Foata normal form. 1141/16934 useless extension candidates. Maximal degree in co-relation 60272. Up to 3686 conditions per place. [2023-11-29 04:16:08,047 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 374 selfloop transitions, 44 changer transitions 0/448 dead transitions. [2023-11-29 04:16:08,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 448 transitions, 4443 flow [2023-11-29 04:16:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 04:16:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 04:16:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 893 transitions. [2023-11-29 04:16:08,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946089262041538 [2023-11-29 04:16:08,050 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 893 transitions. [2023-11-29 04:16:08,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 893 transitions. [2023-11-29 04:16:08,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:16:08,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 893 transitions. [2023-11-29 04:16:08,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 28.806451612903224) internal successors, (893), 31 states have internal predecessors, (893), 0 states have call successors, (0), 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 04:16:08,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:16:08,055 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:16:08,055 INFO L175 Difference]: Start difference. First operand has 190 places, 133 transitions, 899 flow. Second operand 31 states and 893 transitions. [2023-11-29 04:16:08,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 448 transitions, 4443 flow [2023-11-29 04:16:08,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 448 transitions, 4212 flow, removed 1 selfloop flow, removed 16 redundant places. [2023-11-29 04:16:08,242 INFO L231 Difference]: Finished difference. Result has 207 places, 141 transitions, 999 flow [2023-11-29 04:16:08,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=999, PETRI_PLACES=207, PETRI_TRANSITIONS=141} [2023-11-29 04:16:08,243 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 139 predicate places. [2023-11-29 04:16:08,243 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 141 transitions, 999 flow [2023-11-29 04:16:08,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 24.22222222222222) internal successors, (872), 36 states have internal predecessors, (872), 0 states have call successors, (0), 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 04:16:08,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:16:08,243 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:16:08,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 04:16:08,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:16:08,444 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:16:08,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:16:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1446683736, now seen corresponding path program 1 times [2023-11-29 04:16:08,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:16:08,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694379458] [2023-11-29 04:16:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:08,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:16:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 47 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:16:09,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:16:09,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694379458] [2023-11-29 04:16:09,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694379458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:16:09,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818951840] [2023-11-29 04:16:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:16:09,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:16:09,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:16:09,243 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:16:09,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:16:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:16:09,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 04:16:09,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:09,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 04:16:09,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:16:09,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:16:09,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:16:09,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:16:09,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:16:09,446 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 04:16:09,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:16:09,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:16:09,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:16:09,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:16:09,579 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:16:09,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:16:09,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:16:09,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:16:09,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:16:09,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:16:09,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:16:09,781 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 17 treesize of output 9 [2023-11-29 04:16:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:16:09,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:16:09,963 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1204 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1204) c_~o_0~0.base) (+ c_~o_0~0.offset 4))))) is different from false [2023-11-29 04:16:56,220 INFO L349 Elim1Store]: treesize reduction 139, result has 26.1 percent of original size [2023-11-29 04:16:56,220 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 63 [2023-11-29 04:16:56,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:16:56,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 04:16:56,232 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 13 treesize of output 9 [2023-11-29 04:16:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 13 not checked. [2023-11-29 04:16:56,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818951840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:16:56,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:16:56,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 37 [2023-11-29 04:16:56,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4928187] [2023-11-29 04:16:56,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:16:56,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 04:16:56,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:16:56,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 04:16:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1249, Unknown=12, NotChecked=72, Total=1482 [2023-11-29 04:16:56,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2023-11-29 04:16:56,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 141 transitions, 999 flow. Second operand has 39 states, 39 states have (on average 22.153846153846153) internal successors, (864), 39 states have internal predecessors, (864), 0 states have call successors, (0), 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 04:16:56,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:16:56,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2023-11-29 04:16:56,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:17:01,129 INFO L124 PetriNetUnfolderBase]: 9131/15664 cut-off events. [2023-11-29 04:17:01,130 INFO L125 PetriNetUnfolderBase]: For 75525/77639 co-relation queries the response was YES. [2023-11-29 04:17:01,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64121 conditions, 15664 events. 9131/15664 cut-off events. For 75525/77639 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 113863 event pairs, 1731 based on Foata normal form. 1275/16892 useless extension candidates. Maximal degree in co-relation 61540. Up to 3452 conditions per place. [2023-11-29 04:17:01,235 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 511 selfloop transitions, 50 changer transitions 0/587 dead transitions. [2023-11-29 04:17:01,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 587 transitions, 5878 flow [2023-11-29 04:17:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 04:17:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 04:17:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 963 transitions. [2023-11-29 04:17:01,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37690802348336594 [2023-11-29 04:17:01,237 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 963 transitions. [2023-11-29 04:17:01,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 963 transitions. [2023-11-29 04:17:01,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:17:01,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 963 transitions. [2023-11-29 04:17:01,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 27.514285714285716) internal successors, (963), 35 states have internal predecessors, (963), 0 states have call successors, (0), 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 04:17:01,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 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 04:17:01,241 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 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 04:17:01,241 INFO L175 Difference]: Start difference. First operand has 207 places, 141 transitions, 999 flow. Second operand 35 states and 963 transitions. [2023-11-29 04:17:01,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 587 transitions, 5878 flow [2023-11-29 04:17:01,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 587 transitions, 5669 flow, removed 26 selfloop flow, removed 24 redundant places. [2023-11-29 04:17:01,374 INFO L231 Difference]: Finished difference. Result has 222 places, 147 transitions, 1100 flow [2023-11-29 04:17:01,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1100, PETRI_PLACES=222, PETRI_TRANSITIONS=147} [2023-11-29 04:17:01,374 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 154 predicate places. [2023-11-29 04:17:01,374 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 147 transitions, 1100 flow [2023-11-29 04:17:01,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 22.153846153846153) internal successors, (864), 39 states have internal predecessors, (864), 0 states have call successors, (0), 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 04:17:01,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:17:01,375 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:01,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:17:01,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:01,575 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:17:01,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:17:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash -236099652, now seen corresponding path program 1 times [2023-11-29 04:17:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:17:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920354636] [2023-11-29 04:17:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:17:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:17:02,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:17:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920354636] [2023-11-29 04:17:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920354636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:17:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298797117] [2023-11-29 04:17:02,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:17:02,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:17:02,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:17:02,258 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:17:02,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:17:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:17:02,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 04:17:02,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:17:02,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 04:17:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:17:02,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:17:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:17:02,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:17:02,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:17:02,465 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 04:17:02,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:17:02,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:17:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:17:02,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:17:02,593 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:17:02,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:17:02,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:17:02,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:17:02,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:17:02,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:17:02,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:17:02,751 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 17 treesize of output 9 [2023-11-29 04:17:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:17:02,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:17:02,947 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1283 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_186| Int)) (or (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_186| v_ArrVal_1283) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_186|) 0)))) is different from false [2023-11-29 04:17:26,440 INFO L349 Elim1Store]: treesize reduction 139, result has 26.1 percent of original size [2023-11-29 04:17:26,440 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 63 [2023-11-29 04:17:26,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:17:26,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 04:17:26,453 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 13 treesize of output 9 [2023-11-29 04:17:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 13 not checked. [2023-11-29 04:17:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298797117] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:17:26,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:17:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-29 04:17:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492522303] [2023-11-29 04:17:26,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:17:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 04:17:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:17:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 04:17:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=991, Unknown=10, NotChecked=64, Total=1190 [2023-11-29 04:17:30,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:17:34,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:17:38,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:17:42,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:17:46,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:17:50,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:17:54,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:17:58,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:02,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:06,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:10,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:14,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:18,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:22,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:26,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:30,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:18:30,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:18:30,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 147 transitions, 1100 flow. Second operand has 35 states, 35 states have (on average 24.228571428571428) internal successors, (848), 35 states have internal predecessors, (848), 0 states have call successors, (0), 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 04:18:30,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:18:30,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:18:30,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:18:35,600 INFO L124 PetriNetUnfolderBase]: 8807/15676 cut-off events. [2023-11-29 04:18:35,601 INFO L125 PetriNetUnfolderBase]: For 89366/91041 co-relation queries the response was YES. [2023-11-29 04:18:35,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66026 conditions, 15676 events. 8807/15676 cut-off events. For 89366/91041 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 116899 event pairs, 2113 based on Foata normal form. 1121/16744 useless extension candidates. Maximal degree in co-relation 63524. Up to 4178 conditions per place. [2023-11-29 04:18:35,747 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 352 selfloop transitions, 41 changer transitions 0/427 dead transitions. [2023-11-29 04:18:35,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 427 transitions, 4483 flow [2023-11-29 04:18:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:18:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 04:18:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 847 transitions. [2023-11-29 04:18:35,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867579908675799 [2023-11-29 04:18:35,750 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 847 transitions. [2023-11-29 04:18:35,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 847 transitions. [2023-11-29 04:18:35,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:18:35,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 847 transitions. [2023-11-29 04:18:35,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 28.233333333333334) internal successors, (847), 30 states have internal predecessors, (847), 0 states have call successors, (0), 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 04:18:35,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 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 04:18:35,755 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 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 04:18:35,755 INFO L175 Difference]: Start difference. First operand has 222 places, 147 transitions, 1100 flow. Second operand 30 states and 847 transitions. [2023-11-29 04:18:35,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 427 transitions, 4483 flow [2023-11-29 04:18:35,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 427 transitions, 4205 flow, removed 27 selfloop flow, removed 27 redundant places. [2023-11-29 04:18:35,954 INFO L231 Difference]: Finished difference. Result has 225 places, 147 transitions, 1098 flow [2023-11-29 04:18:35,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1098, PETRI_PLACES=225, PETRI_TRANSITIONS=147} [2023-11-29 04:18:35,955 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 157 predicate places. [2023-11-29 04:18:35,955 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 147 transitions, 1098 flow [2023-11-29 04:18:35,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 24.228571428571428) internal successors, (848), 35 states have internal predecessors, (848), 0 states have call successors, (0), 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 04:18:35,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:18:35,955 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:18:35,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 04:18:36,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:36,156 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:18:36,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:18:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1897523669, now seen corresponding path program 1 times [2023-11-29 04:18:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:18:36,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872634753] [2023-11-29 04:18:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:36,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:18:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:18:37,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:18:37,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872634753] [2023-11-29 04:18:37,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872634753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:18:37,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027681364] [2023-11-29 04:18:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:18:37,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:18:37,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:18:37,015 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:18:37,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:18:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:18:37,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 04:18:37,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:18:37,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 04:18:37,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:18:37,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:18:37,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:18:37,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:18:37,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:18:37,283 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 04:18:37,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:18:37,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:18:37,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:18:37,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:18:37,410 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:18:37,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:18:37,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:18:37,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:18:37,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:18:37,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:18:37,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:18:37,559 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 15 treesize of output 7 [2023-11-29 04:18:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:18:37,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:32,533 INFO L349 Elim1Store]: treesize reduction 139, result has 26.1 percent of original size [2023-11-29 04:19:32,533 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 61 [2023-11-29 04:19:32,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:19:32,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 04:19:32,545 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 11 treesize of output 7 [2023-11-29 04:19:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 3 proven. 48 refuted. 4 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:19:32,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027681364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:32,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:32,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-11-29 04:19:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317364968] [2023-11-29 04:19:32,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:32,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 04:19:32,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 04:19:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1238, Unknown=25, NotChecked=0, Total=1406 [2023-11-29 04:19:36,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:19:40,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:19:44,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:19:49,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:19:53,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:19:57,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:19:58,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:02,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:06,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:08,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:12,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:13,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:17,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:22,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:26,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 04:20:26,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2023-11-29 04:20:26,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 147 transitions, 1098 flow. Second operand has 38 states, 38 states have (on average 22.18421052631579) internal successors, (843), 38 states have internal predecessors, (843), 0 states have call successors, (0), 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 04:20:26,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:26,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2023-11-29 04:20:26,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:31,617 INFO L124 PetriNetUnfolderBase]: 9595/17203 cut-off events. [2023-11-29 04:20:31,617 INFO L125 PetriNetUnfolderBase]: For 90677/92281 co-relation queries the response was YES. [2023-11-29 04:20:31,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72126 conditions, 17203 events. 9595/17203 cut-off events. For 90677/92281 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 130515 event pairs, 2727 based on Foata normal form. 1173/18299 useless extension candidates. Maximal degree in co-relation 68895. Up to 4196 conditions per place. [2023-11-29 04:20:31,789 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 541 selfloop transitions, 49 changer transitions 0/618 dead transitions. [2023-11-29 04:20:31,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 618 transitions, 6460 flow [2023-11-29 04:20:31,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 04:20:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-29 04:20:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 990 transitions. [2023-11-29 04:20:31,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3767123287671233 [2023-11-29 04:20:31,791 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 990 transitions. [2023-11-29 04:20:31,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 990 transitions. [2023-11-29 04:20:31,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:31,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 990 transitions. [2023-11-29 04:20:31,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 27.5) internal successors, (990), 36 states have internal predecessors, (990), 0 states have call successors, (0), 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 04:20:31,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 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 04:20:31,795 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 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 04:20:31,795 INFO L175 Difference]: Start difference. First operand has 225 places, 147 transitions, 1098 flow. Second operand 36 states and 990 transitions. [2023-11-29 04:20:31,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 618 transitions, 6460 flow [2023-11-29 04:20:31,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 618 transitions, 6128 flow, removed 2 selfloop flow, removed 27 redundant places. [2023-11-29 04:20:31,996 INFO L231 Difference]: Finished difference. Result has 237 places, 151 transitions, 1154 flow [2023-11-29 04:20:31,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1154, PETRI_PLACES=237, PETRI_TRANSITIONS=151} [2023-11-29 04:20:31,997 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 169 predicate places. [2023-11-29 04:20:31,997 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 151 transitions, 1154 flow [2023-11-29 04:20:31,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 22.18421052631579) internal successors, (843), 38 states have internal predecessors, (843), 0 states have call successors, (0), 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 04:20:31,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:31,998 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:32,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 04:20:32,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 04:20:32,198 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:20:32,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1270845191, now seen corresponding path program 1 times [2023-11-29 04:20:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101504466] [2023-11-29 04:20:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:20:33,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101504466] [2023-11-29 04:20:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101504466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:20:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431797038] [2023-11-29 04:20:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:33,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:33,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:33,037 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:33,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:20:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:33,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 04:20:33,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:33,346 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 04:20:33,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:20:33,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:20:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:20:33,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:20:33,639 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 17 treesize of output 9 [2023-11-29 04:20:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:20:33,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:20:34,437 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 25 treesize of output 23 [2023-11-29 04:20:34,440 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 54 treesize of output 50 [2023-11-29 04:20:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 04:20:34,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431797038] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:20:34,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:20:34,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 14] total 40 [2023-11-29 04:20:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29843526] [2023-11-29 04:20:34,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:20:34,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 04:20:34,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:34,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 04:20:34,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 04:20:34,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2023-11-29 04:20:34,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 151 transitions, 1154 flow. Second operand has 41 states, 41 states have (on average 26.853658536585368) internal successors, (1101), 41 states have internal predecessors, (1101), 0 states have call successors, (0), 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 04:20:34,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:34,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2023-11-29 04:20:34,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:38,736 INFO L124 PetriNetUnfolderBase]: 7847/14592 cut-off events. [2023-11-29 04:20:38,736 INFO L125 PetriNetUnfolderBase]: For 91764/92983 co-relation queries the response was YES. [2023-11-29 04:20:38,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62427 conditions, 14592 events. 7847/14592 cut-off events. For 91764/92983 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 111837 event pairs, 1583 based on Foata normal form. 949/15482 useless extension candidates. Maximal degree in co-relation 60020. Up to 3208 conditions per place. [2023-11-29 04:20:38,868 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 537 selfloop transitions, 50 changer transitions 0/626 dead transitions. [2023-11-29 04:20:38,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 626 transitions, 7019 flow [2023-11-29 04:20:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:20:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 04:20:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 862 transitions. [2023-11-29 04:20:38,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723287671232877 [2023-11-29 04:20:38,870 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 862 transitions. [2023-11-29 04:20:38,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 862 transitions. [2023-11-29 04:20:38,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:38,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 862 transitions. [2023-11-29 04:20:38,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 34.48) internal successors, (862), 25 states have internal predecessors, (862), 0 states have call successors, (0), 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 04:20:38,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 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 04:20:38,873 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 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 04:20:38,873 INFO L175 Difference]: Start difference. First operand has 237 places, 151 transitions, 1154 flow. Second operand 25 states and 862 transitions. [2023-11-29 04:20:38,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 626 transitions, 7019 flow [2023-11-29 04:20:39,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 626 transitions, 6457 flow, removed 29 selfloop flow, removed 31 redundant places. [2023-11-29 04:20:39,081 INFO L231 Difference]: Finished difference. Result has 235 places, 157 transitions, 1214 flow [2023-11-29 04:20:39,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1214, PETRI_PLACES=235, PETRI_TRANSITIONS=157} [2023-11-29 04:20:39,082 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 167 predicate places. [2023-11-29 04:20:39,082 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 157 transitions, 1214 flow [2023-11-29 04:20:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 26.853658536585368) internal successors, (1101), 41 states have internal predecessors, (1101), 0 states have call successors, (0), 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 04:20:39,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:39,082 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:39,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:20:39,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:20:39,283 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:20:39,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1306307590, now seen corresponding path program 1 times [2023-11-29 04:20:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:39,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556768512] [2023-11-29 04:20:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:20:39,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:39,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556768512] [2023-11-29 04:20:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556768512] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:20:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837935055] [2023-11-29 04:20:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:39,358 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:39,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:20:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:39,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:20:39,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:20:39,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837935055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:20:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 04:20:39,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216432972] [2023-11-29 04:20:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:39,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:20:39,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:39,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:20:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:20:39,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2023-11-29 04:20:39,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 157 transitions, 1214 flow. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 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 04:20:39,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:39,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2023-11-29 04:20:39,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:41,558 INFO L124 PetriNetUnfolderBase]: 5187/12304 cut-off events. [2023-11-29 04:20:41,558 INFO L125 PetriNetUnfolderBase]: For 66516/67096 co-relation queries the response was YES. [2023-11-29 04:20:41,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51899 conditions, 12304 events. 5187/12304 cut-off events. For 66516/67096 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 109471 event pairs, 1825 based on Foata normal form. 592/12809 useless extension candidates. Maximal degree in co-relation 50778. Up to 6094 conditions per place. [2023-11-29 04:20:41,675 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 162 selfloop transitions, 13 changer transitions 0/228 dead transitions. [2023-11-29 04:20:41,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 228 transitions, 2274 flow [2023-11-29 04:20:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2023-11-29 04:20:41,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7054794520547946 [2023-11-29 04:20:41,676 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 206 transitions. [2023-11-29 04:20:41,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 206 transitions. [2023-11-29 04:20:41,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:41,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 206 transitions. [2023-11-29 04:20:41,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 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 04:20:41,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:20:41,677 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:20:41,677 INFO L175 Difference]: Start difference. First operand has 235 places, 157 transitions, 1214 flow. Second operand 4 states and 206 transitions. [2023-11-29 04:20:41,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 228 transitions, 2274 flow [2023-11-29 04:20:41,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 228 transitions, 2131 flow, removed 12 selfloop flow, removed 17 redundant places. [2023-11-29 04:20:41,847 INFO L231 Difference]: Finished difference. Result has 220 places, 156 transitions, 1147 flow [2023-11-29 04:20:41,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1147, PETRI_PLACES=220, PETRI_TRANSITIONS=156} [2023-11-29 04:20:41,848 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 152 predicate places. [2023-11-29 04:20:41,849 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 156 transitions, 1147 flow [2023-11-29 04:20:41,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 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 04:20:41,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:41,849 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:41,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 04:20:42,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:20:42,050 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:20:42,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash 741496095, now seen corresponding path program 1 times [2023-11-29 04:20:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801242240] [2023-11-29 04:20:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:42,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 04:20:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:42,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801242240] [2023-11-29 04:20:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801242240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:20:42,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370112396] [2023-11-29 04:20:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:42,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:42,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:42,718 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:42,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 04:20:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:42,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-29 04:20:42,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:42,989 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 04:20:43,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:20:43,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:20:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:20:43,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:20:43,244 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 15 treesize of output 7 [2023-11-29 04:20:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:20:43,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:20:45,326 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 31 treesize of output 29 [2023-11-29 04:20:45,330 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 422 treesize of output 406 [2023-11-29 04:20:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 04:20:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370112396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:20:45,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:20:45,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 16] total 41 [2023-11-29 04:20:45,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077916158] [2023-11-29 04:20:45,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:20:45,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 04:20:45,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 04:20:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1533, Unknown=1, NotChecked=0, Total=1722 [2023-11-29 04:20:45,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2023-11-29 04:20:45,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 156 transitions, 1147 flow. Second operand has 42 states, 42 states have (on average 22.285714285714285) internal successors, (936), 42 states have internal predecessors, (936), 0 states have call successors, (0), 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 04:20:45,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:45,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2023-11-29 04:20:45,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:50,624 INFO L124 PetriNetUnfolderBase]: 9767/16344 cut-off events. [2023-11-29 04:20:50,624 INFO L125 PetriNetUnfolderBase]: For 104513/106092 co-relation queries the response was YES. [2023-11-29 04:20:50,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72742 conditions, 16344 events. 9767/16344 cut-off events. For 104513/106092 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 114804 event pairs, 2219 based on Foata normal form. 1181/17472 useless extension candidates. Maximal degree in co-relation 70063. Up to 4372 conditions per place. [2023-11-29 04:20:50,770 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 593 selfloop transitions, 49 changer transitions 0/675 dead transitions. [2023-11-29 04:20:50,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 675 transitions, 7344 flow [2023-11-29 04:20:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:20:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 04:20:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 786 transitions. [2023-11-29 04:20:50,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41412012644889357 [2023-11-29 04:20:50,772 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 786 transitions. [2023-11-29 04:20:50,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 786 transitions. [2023-11-29 04:20:50,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:50,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 786 transitions. [2023-11-29 04:20:50,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 30.23076923076923) internal successors, (786), 26 states have internal predecessors, (786), 0 states have call successors, (0), 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 04:20:50,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 73.0) internal successors, (1971), 27 states have internal predecessors, (1971), 0 states have call successors, (0), 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 04:20:50,777 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 73.0) internal successors, (1971), 27 states have internal predecessors, (1971), 0 states have call successors, (0), 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 04:20:50,777 INFO L175 Difference]: Start difference. First operand has 220 places, 156 transitions, 1147 flow. Second operand 26 states and 786 transitions. [2023-11-29 04:20:50,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 675 transitions, 7344 flow [2023-11-29 04:20:50,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 675 transitions, 6974 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 04:20:50,936 INFO L231 Difference]: Finished difference. Result has 245 places, 160 transitions, 1256 flow [2023-11-29 04:20:50,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1256, PETRI_PLACES=245, PETRI_TRANSITIONS=160} [2023-11-29 04:20:50,936 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 177 predicate places. [2023-11-29 04:20:50,936 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 160 transitions, 1256 flow [2023-11-29 04:20:50,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 22.285714285714285) internal successors, (936), 42 states have internal predecessors, (936), 0 states have call successors, (0), 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 04:20:50,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:50,937 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:50,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 04:20:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:51,138 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:20:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1840828809, now seen corresponding path program 1 times [2023-11-29 04:20:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104913953] [2023-11-29 04:20:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-29 04:20:51,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:51,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104913953] [2023-11-29 04:20:51,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104913953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:51,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:51,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:20:51,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121429071] [2023-11-29 04:20:51,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:51,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:20:51,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2023-11-29 04:20:51,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 160 transitions, 1256 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 04:20:51,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:51,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2023-11-29 04:20:51,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:53,067 INFO L124 PetriNetUnfolderBase]: 4607/10894 cut-off events. [2023-11-29 04:20:53,067 INFO L125 PetriNetUnfolderBase]: For 68799/69423 co-relation queries the response was YES. [2023-11-29 04:20:53,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46715 conditions, 10894 events. 4607/10894 cut-off events. For 68799/69423 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 95557 event pairs, 573 based on Foata normal form. 544/11399 useless extension candidates. Maximal degree in co-relation 44919. Up to 4984 conditions per place. [2023-11-29 04:20:53,170 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 167 selfloop transitions, 15 changer transitions 0/238 dead transitions. [2023-11-29 04:20:53,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 238 transitions, 2391 flow [2023-11-29 04:20:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2023-11-29 04:20:53,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.726027397260274 [2023-11-29 04:20:53,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 212 transitions. [2023-11-29 04:20:53,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 212 transitions. [2023-11-29 04:20:53,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:53,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 212 transitions. [2023-11-29 04:20:53,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:53,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:20:53,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:20:53,173 INFO L175 Difference]: Start difference. First operand has 245 places, 160 transitions, 1256 flow. Second operand 4 states and 212 transitions. [2023-11-29 04:20:53,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 238 transitions, 2391 flow [2023-11-29 04:20:53,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 238 transitions, 2205 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-11-29 04:20:53,356 INFO L231 Difference]: Finished difference. Result has 225 places, 159 transitions, 1172 flow [2023-11-29 04:20:53,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1172, PETRI_PLACES=225, PETRI_TRANSITIONS=159} [2023-11-29 04:20:53,357 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 157 predicate places. [2023-11-29 04:20:53,357 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 159 transitions, 1172 flow [2023-11-29 04:20:53,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 04:20:53,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:53,357 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:53,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 04:20:53,357 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:20:53,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1511543305, now seen corresponding path program 1 times [2023-11-29 04:20:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:53,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412464560] [2023-11-29 04:20:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:20:53,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:53,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412464560] [2023-11-29 04:20:53,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412464560] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:20:53,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137967827] [2023-11-29 04:20:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:53,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:53,431 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:53,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 04:20:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:53,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:20:53,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 04:20:53,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:53,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137967827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:53,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:20:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:20:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128480040] [2023-11-29 04:20:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:53,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:20:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:20:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:20:53,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2023-11-29 04:20:53,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 159 transitions, 1172 flow. Second operand has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 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 04:20:53,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:53,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2023-11-29 04:20:53,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:55,528 INFO L124 PetriNetUnfolderBase]: 4847/11118 cut-off events. [2023-11-29 04:20:55,528 INFO L125 PetriNetUnfolderBase]: For 66264/67009 co-relation queries the response was YES. [2023-11-29 04:20:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47032 conditions, 11118 events. 4847/11118 cut-off events. For 66264/67009 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 95538 event pairs, 99 based on Foata normal form. 625/11714 useless extension candidates. Maximal degree in co-relation 45402. Up to 3954 conditions per place. [2023-11-29 04:20:55,633 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 244 selfloop transitions, 13 changer transitions 0/311 dead transitions. [2023-11-29 04:20:55,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 311 transitions, 3168 flow [2023-11-29 04:20:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:20:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:20:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 317 transitions. [2023-11-29 04:20:55,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723744292237443 [2023-11-29 04:20:55,634 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 317 transitions. [2023-11-29 04:20:55,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 317 transitions. [2023-11-29 04:20:55,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:55,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 317 transitions. [2023-11-29 04:20:55,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 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 04:20:55,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 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 04:20:55,636 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 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 04:20:55,636 INFO L175 Difference]: Start difference. First operand has 225 places, 159 transitions, 1172 flow. Second operand 6 states and 317 transitions. [2023-11-29 04:20:55,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 311 transitions, 3168 flow [2023-11-29 04:20:55,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 311 transitions, 3038 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 04:20:55,810 INFO L231 Difference]: Finished difference. Result has 227 places, 158 transitions, 1168 flow [2023-11-29 04:20:55,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1168, PETRI_PLACES=227, PETRI_TRANSITIONS=158} [2023-11-29 04:20:55,811 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 159 predicate places. [2023-11-29 04:20:55,811 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 158 transitions, 1168 flow [2023-11-29 04:20:55,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 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 04:20:55,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:55,811 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:55,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 04:20:56,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 04:20:56,012 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:20:56,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:56,012 INFO L85 PathProgramCache]: Analyzing trace with hash -386796959, now seen corresponding path program 1 times [2023-11-29 04:20:56,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:56,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105716157] [2023-11-29 04:20:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:56,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-29 04:20:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:56,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105716157] [2023-11-29 04:20:56,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105716157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:56,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:56,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:20:56,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986776114] [2023-11-29 04:20:56,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:56,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:56,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:56,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:20:56,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2023-11-29 04:20:56,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 158 transitions, 1168 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 04:20:56,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:56,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2023-11-29 04:20:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:57,747 INFO L124 PetriNetUnfolderBase]: 4607/10948 cut-off events. [2023-11-29 04:20:57,747 INFO L125 PetriNetUnfolderBase]: For 63363/63972 co-relation queries the response was YES. [2023-11-29 04:20:57,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46299 conditions, 10948 events. 4607/10948 cut-off events. For 63363/63972 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 95669 event pairs, 523 based on Foata normal form. 545/11456 useless extension candidates. Maximal degree in co-relation 44682. Up to 5044 conditions per place. [2023-11-29 04:20:57,852 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 165 selfloop transitions, 15 changer transitions 0/234 dead transitions. [2023-11-29 04:20:57,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 234 transitions, 2216 flow [2023-11-29 04:20:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2023-11-29 04:20:57,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7191780821917808 [2023-11-29 04:20:57,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 210 transitions. [2023-11-29 04:20:57,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 210 transitions. [2023-11-29 04:20:57,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:57,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 210 transitions. [2023-11-29 04:20:57,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:57,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:20:57,854 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 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 04:20:57,854 INFO L175 Difference]: Start difference. First operand has 227 places, 158 transitions, 1168 flow. Second operand 4 states and 210 transitions. [2023-11-29 04:20:57,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 234 transitions, 2216 flow [2023-11-29 04:20:58,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 234 transitions, 2192 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-29 04:20:58,047 INFO L231 Difference]: Finished difference. Result has 224 places, 157 transitions, 1170 flow [2023-11-29 04:20:58,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1170, PETRI_PLACES=224, PETRI_TRANSITIONS=157} [2023-11-29 04:20:58,047 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 156 predicate places. [2023-11-29 04:20:58,047 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 157 transitions, 1170 flow [2023-11-29 04:20:58,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 04:20:58,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:58,047 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 04:20:58,048 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:20:58,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1493033602, now seen corresponding path program 2 times [2023-11-29 04:20:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049685282] [2023-11-29 04:20:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:20:58,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049685282] [2023-11-29 04:20:58,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049685282] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:20:58,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744424701] [2023-11-29 04:20:58,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:20:58,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:58,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:58,801 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:58,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 04:20:59,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:20:59,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:20:59,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 04:20:59,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:59,132 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 04:20:59,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:20:59,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:20:59,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:20:59,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:20:59,364 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 15 treesize of output 7 [2023-11-29 04:20:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:20:59,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:00,780 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 23 treesize of output 21 [2023-11-29 04:21:00,783 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 102 treesize of output 94 [2023-11-29 04:21:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:21:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744424701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:00,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:21:00,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 17] total 39 [2023-11-29 04:21:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285335763] [2023-11-29 04:21:00,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:00,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 04:21:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 04:21:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1418, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 04:21:01,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2023-11-29 04:21:01,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 157 transitions, 1170 flow. Second operand has 40 states, 40 states have (on average 32.95) internal successors, (1318), 40 states have internal predecessors, (1318), 0 states have call successors, (0), 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 04:21:01,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:01,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2023-11-29 04:21:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:06,248 INFO L124 PetriNetUnfolderBase]: 6451/14615 cut-off events. [2023-11-29 04:21:06,248 INFO L125 PetriNetUnfolderBase]: For 90532/91558 co-relation queries the response was YES. [2023-11-29 04:21:06,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63918 conditions, 14615 events. 6451/14615 cut-off events. For 90532/91558 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 127428 event pairs, 1005 based on Foata normal form. 750/15330 useless extension candidates. Maximal degree in co-relation 61566. Up to 1778 conditions per place. [2023-11-29 04:21:06,384 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 535 selfloop transitions, 50 changer transitions 0/637 dead transitions. [2023-11-29 04:21:06,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 637 transitions, 7024 flow [2023-11-29 04:21:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:21:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 04:21:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1015 transitions. [2023-11-29 04:21:06,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561643835616439 [2023-11-29 04:21:06,386 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1015 transitions. [2023-11-29 04:21:06,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1015 transitions. [2023-11-29 04:21:06,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:06,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1015 transitions. [2023-11-29 04:21:06,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 40.6) internal successors, (1015), 25 states have internal predecessors, (1015), 0 states have call successors, (0), 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 04:21:06,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 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 04:21:06,391 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 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 04:21:06,391 INFO L175 Difference]: Start difference. First operand has 224 places, 157 transitions, 1170 flow. Second operand 25 states and 1015 transitions. [2023-11-29 04:21:06,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 637 transitions, 7024 flow [2023-11-29 04:21:06,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 637 transitions, 6608 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-29 04:21:06,653 INFO L231 Difference]: Finished difference. Result has 248 places, 165 transitions, 1350 flow [2023-11-29 04:21:06,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1350, PETRI_PLACES=248, PETRI_TRANSITIONS=165} [2023-11-29 04:21:06,654 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 180 predicate places. [2023-11-29 04:21:06,654 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 165 transitions, 1350 flow [2023-11-29 04:21:06,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 32.95) internal successors, (1318), 40 states have internal predecessors, (1318), 0 states have call successors, (0), 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 04:21:06,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:06,654 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:06,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 04:21:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 04:21:06,855 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:21:06,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 960567626, now seen corresponding path program 2 times [2023-11-29 04:21:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939631323] [2023-11-29 04:21:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:21:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939631323] [2023-11-29 04:21:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939631323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:21:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316697787] [2023-11-29 04:21:07,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:21:07,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:21:07,615 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:21:07,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 04:21:07,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:21:07,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:07,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-29 04:21:07,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:07,933 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 04:21:07,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:07,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:21:08,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:08,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:21:08,182 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 17 treesize of output 9 [2023-11-29 04:21:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:21:08,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:11,290 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 25 treesize of output 23 [2023-11-29 04:21:11,294 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 118 treesize of output 110 [2023-11-29 04:21:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:21:11,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316697787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:11,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:21:11,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 17] total 39 [2023-11-29 04:21:11,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203417777] [2023-11-29 04:21:11,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:11,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 04:21:11,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 04:21:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1417, Unknown=1, NotChecked=0, Total=1560 [2023-11-29 04:21:12,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2023-11-29 04:21:12,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 165 transitions, 1350 flow. Second operand has 40 states, 40 states have (on average 31.0) internal successors, (1240), 40 states have internal predecessors, (1240), 0 states have call successors, (0), 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 04:21:12,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:12,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2023-11-29 04:21:12,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:17,475 INFO L124 PetriNetUnfolderBase]: 7263/15511 cut-off events. [2023-11-29 04:21:17,475 INFO L125 PetriNetUnfolderBase]: For 97043/98159 co-relation queries the response was YES. [2023-11-29 04:21:17,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69400 conditions, 15511 events. 7263/15511 cut-off events. For 97043/98159 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 131256 event pairs, 1467 based on Foata normal form. 812/16282 useless extension candidates. Maximal degree in co-relation 66859. Up to 2336 conditions per place. [2023-11-29 04:21:17,628 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 463 selfloop transitions, 46 changer transitions 0/558 dead transitions. [2023-11-29 04:21:17,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 558 transitions, 5873 flow [2023-11-29 04:21:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 04:21:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 04:21:17,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 877 transitions. [2023-11-29 04:21:17,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223347230494342 [2023-11-29 04:21:17,630 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 877 transitions. [2023-11-29 04:21:17,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 877 transitions. [2023-11-29 04:21:17,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:17,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 877 transitions. [2023-11-29 04:21:17,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 38.130434782608695) internal successors, (877), 23 states have internal predecessors, (877), 0 states have call successors, (0), 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 04:21:17,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 73.0) internal successors, (1752), 24 states have internal predecessors, (1752), 0 states have call successors, (0), 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 04:21:17,633 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 73.0) internal successors, (1752), 24 states have internal predecessors, (1752), 0 states have call successors, (0), 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 04:21:17,633 INFO L175 Difference]: Start difference. First operand has 248 places, 165 transitions, 1350 flow. Second operand 23 states and 877 transitions. [2023-11-29 04:21:17,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 558 transitions, 5873 flow [2023-11-29 04:21:17,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 558 transitions, 5796 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-11-29 04:21:17,894 INFO L231 Difference]: Finished difference. Result has 254 places, 165 transitions, 1370 flow [2023-11-29 04:21:17,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1370, PETRI_PLACES=254, PETRI_TRANSITIONS=165} [2023-11-29 04:21:17,895 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 186 predicate places. [2023-11-29 04:21:17,895 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 165 transitions, 1370 flow [2023-11-29 04:21:17,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 31.0) internal successors, (1240), 40 states have internal predecessors, (1240), 0 states have call successors, (0), 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 04:21:17,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:17,896 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:17,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 04:21:18,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 04:21:18,096 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:21:18,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1635818152, now seen corresponding path program 2 times [2023-11-29 04:21:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:18,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079844281] [2023-11-29 04:21:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:21:18,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079844281] [2023-11-29 04:21:18,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079844281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:21:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680916364] [2023-11-29 04:21:18,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:21:18,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:18,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:21:18,905 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:21:18,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 04:21:19,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:21:19,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:19,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-29 04:21:19,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:19,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 04:21:19,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:19,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:19,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:19,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:21:19,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:19,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:19,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:19,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:21:19,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:19,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:19,199 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 04:21:19,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:21:19,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:21:19,360 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:21:19,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:21:19,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:21:19,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:21:19,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:21:19,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:21:19,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:21:20,091 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 15 treesize of output 7 [2023-11-29 04:21:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:20,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:20,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:21:20,785 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 51 [2023-11-29 04:21:20,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:21:20,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 04:21:20,798 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 11 treesize of output 7 [2023-11-29 04:21:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:21:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680916364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:21,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:21:21,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 18] total 53 [2023-11-29 04:21:21,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617845747] [2023-11-29 04:21:21,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:21,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-29 04:21:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:21,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-29 04:21:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=2726, Unknown=5, NotChecked=0, Total=2970 [2023-11-29 04:21:22,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:21:22,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 165 transitions, 1370 flow. Second operand has 55 states, 55 states have (on average 24.236363636363638) internal successors, (1333), 55 states have internal predecessors, (1333), 0 states have call successors, (0), 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 04:21:22,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:22,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:21:22,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:30,076 INFO L124 PetriNetUnfolderBase]: 14249/25308 cut-off events. [2023-11-29 04:21:30,077 INFO L125 PetriNetUnfolderBase]: For 185199/187940 co-relation queries the response was YES. [2023-11-29 04:21:30,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116933 conditions, 25308 events. 14249/25308 cut-off events. For 185199/187940 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 195505 event pairs, 1965 based on Foata normal form. 1875/27122 useless extension candidates. Maximal degree in co-relation 113815. Up to 4883 conditions per place. [2023-11-29 04:21:30,283 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 665 selfloop transitions, 50 changer transitions 0/754 dead transitions. [2023-11-29 04:21:30,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 754 transitions, 9042 flow [2023-11-29 04:21:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 04:21:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-29 04:21:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1139 transitions. [2023-11-29 04:21:30,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000702493853179 [2023-11-29 04:21:30,285 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1139 transitions. [2023-11-29 04:21:30,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1139 transitions. [2023-11-29 04:21:30,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:30,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1139 transitions. [2023-11-29 04:21:30,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 29.205128205128204) internal successors, (1139), 39 states have internal predecessors, (1139), 0 states have call successors, (0), 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 04:21:30,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 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 04:21:30,289 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 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 04:21:30,289 INFO L175 Difference]: Start difference. First operand has 254 places, 165 transitions, 1370 flow. Second operand 39 states and 1139 transitions. [2023-11-29 04:21:30,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 754 transitions, 9042 flow [2023-11-29 04:21:30,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 754 transitions, 8559 flow, removed 1 selfloop flow, removed 20 redundant places. [2023-11-29 04:21:30,753 INFO L231 Difference]: Finished difference. Result has 275 places, 173 transitions, 1485 flow [2023-11-29 04:21:30,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1485, PETRI_PLACES=275, PETRI_TRANSITIONS=173} [2023-11-29 04:21:30,753 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 207 predicate places. [2023-11-29 04:21:30,753 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 173 transitions, 1485 flow [2023-11-29 04:21:30,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 24.236363636363638) internal successors, (1333), 55 states have internal predecessors, (1333), 0 states have call successors, (0), 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 04:21:30,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:30,754 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:30,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 04:21:30,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 04:21:30,954 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:21:30,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash -287174880, now seen corresponding path program 2 times [2023-11-29 04:21:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:30,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606581540] [2023-11-29 04:21:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 2 proven. 67 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:21:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606581540] [2023-11-29 04:21:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606581540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:21:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544764621] [2023-11-29 04:21:31,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:21:31,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:31,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:21:31,814 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:21:31,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 04:21:32,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:21:32,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:32,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 04:21:32,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:32,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 04:21:32,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:32,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:21:32,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:32,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:21:32,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:32,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:32,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:32,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:32,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:32,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:21:32,072 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 04:21:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:32,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:21:32,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:32,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:21:32,172 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:21:32,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:21:32,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:32,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:32,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:32,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:32,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:32,421 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 17 treesize of output 9 [2023-11-29 04:21:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 66 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:21:32,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:32,684 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1958 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1958) c_~o_0~0.base) (+ c_~o_0~0.offset 8))))) is different from false [2023-11-29 04:21:47,657 INFO L349 Elim1Store]: treesize reduction 66, result has 35.9 percent of original size [2023-11-29 04:21:47,657 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 51 [2023-11-29 04:21:47,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:21:47,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 04:21:47,670 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 13 treesize of output 9 [2023-11-29 04:21:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 2 proven. 54 refuted. 0 times theorem prover too weak. 22 trivial. 13 not checked. [2023-11-29 04:21:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544764621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:47,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:21:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 42 [2023-11-29 04:21:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810934825] [2023-11-29 04:21:47,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:47,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 04:21:47,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 04:21:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1659, Unknown=6, NotChecked=82, Total=1892 [2023-11-29 04:21:47,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2023-11-29 04:21:47,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 173 transitions, 1485 flow. Second operand has 44 states, 44 states have (on average 22.40909090909091) internal successors, (986), 44 states have internal predecessors, (986), 0 states have call successors, (0), 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 04:21:47,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:47,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2023-11-29 04:21:47,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:56,685 INFO L124 PetriNetUnfolderBase]: 14780/25203 cut-off events. [2023-11-29 04:21:56,685 INFO L125 PetriNetUnfolderBase]: For 190879/194223 co-relation queries the response was YES. [2023-11-29 04:21:56,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120369 conditions, 25203 events. 14780/25203 cut-off events. For 190879/194223 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 188996 event pairs, 2022 based on Foata normal form. 2131/27271 useless extension candidates. Maximal degree in co-relation 117031. Up to 4057 conditions per place. [2023-11-29 04:21:56,888 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 846 selfloop transitions, 57 changer transitions 0/936 dead transitions. [2023-11-29 04:21:56,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 936 transitions, 11331 flow [2023-11-29 04:21:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 04:21:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-29 04:21:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1107 transitions. [2023-11-29 04:21:56,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38883034773445735 [2023-11-29 04:21:56,890 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1107 transitions. [2023-11-29 04:21:56,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1107 transitions. [2023-11-29 04:21:56,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:56,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1107 transitions. [2023-11-29 04:21:56,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 28.384615384615383) internal successors, (1107), 39 states have internal predecessors, (1107), 0 states have call successors, (0), 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 04:21:56,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 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 04:21:56,894 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 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 04:21:56,894 INFO L175 Difference]: Start difference. First operand has 275 places, 173 transitions, 1485 flow. Second operand 39 states and 1107 transitions. [2023-11-29 04:21:56,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 936 transitions, 11331 flow [2023-11-29 04:21:57,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 936 transitions, 10904 flow, removed 51 selfloop flow, removed 31 redundant places. [2023-11-29 04:21:57,290 INFO L231 Difference]: Finished difference. Result has 286 places, 178 transitions, 1591 flow [2023-11-29 04:21:57,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1591, PETRI_PLACES=286, PETRI_TRANSITIONS=178} [2023-11-29 04:21:57,291 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 218 predicate places. [2023-11-29 04:21:57,291 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 178 transitions, 1591 flow [2023-11-29 04:21:57,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 22.40909090909091) internal successors, (986), 44 states have internal predecessors, (986), 0 states have call successors, (0), 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 04:21:57,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:57,291 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:57,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 04:21:57,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 04:21:57,492 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:21:57,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash -829275783, now seen corresponding path program 2 times [2023-11-29 04:21:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:57,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711922016] [2023-11-29 04:21:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 63 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:21:58,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711922016] [2023-11-29 04:21:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711922016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:21:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779545972] [2023-11-29 04:21:58,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:21:58,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:58,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:21:58,287 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:21:58,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 04:21:58,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:21:58,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:58,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-29 04:21:58,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:58,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 04:21:58,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:58,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:58,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:58,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:58,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:58,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:21:58,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:58,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:21:58,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:21:58,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:21:58,681 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 04:21:58,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:21:58,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 04:21:58,916 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:21:58,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:21:58,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:59,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:59,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:59,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:59,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:21:59,693 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 17 treesize of output 9 [2023-11-29 04:21:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:59,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:59,977 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2035 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_2035) c_~o_0~0.base) (+ c_~o_0~0.offset 8)) 4294967296))) is different from false [2023-11-29 04:22:00,014 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_202| Int) (v_ArrVal_2035 (Array Int Int))) (or (< 0 (+ 4294967296 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_202| v_ArrVal_2035) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_202|) 0)))) is different from false [2023-11-29 04:22:00,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:22:00,389 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2023-11-29 04:22:00,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:22:00,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 04:22:00,401 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 13 treesize of output 9 [2023-11-29 04:22:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 26 not checked. [2023-11-29 04:22:00,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779545972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:22:00,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:22:00,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 18] total 59 [2023-11-29 04:22:00,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66936351] [2023-11-29 04:22:00,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:22:00,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 04:22:00,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 04:22:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=3184, Unknown=2, NotChecked=230, Total=3660 [2023-11-29 04:22:00,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:22:00,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 178 transitions, 1591 flow. Second operand has 61 states, 61 states have (on average 24.16393442622951) internal successors, (1474), 61 states have internal predecessors, (1474), 0 states have call successors, (0), 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 04:22:00,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:00,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:22:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:09,651 INFO L124 PetriNetUnfolderBase]: 14090/25083 cut-off events. [2023-11-29 04:22:09,651 INFO L125 PetriNetUnfolderBase]: For 208651/211178 co-relation queries the response was YES. [2023-11-29 04:22:09,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120615 conditions, 25083 events. 14090/25083 cut-off events. For 208651/211178 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 193917 event pairs, 2529 based on Foata normal form. 1849/26863 useless extension candidates. Maximal degree in co-relation 117401. Up to 5020 conditions per place. [2023-11-29 04:22:09,905 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 593 selfloop transitions, 46 changer transitions 0/681 dead transitions. [2023-11-29 04:22:09,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 681 transitions, 8402 flow [2023-11-29 04:22:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 04:22:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 04:22:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1054 transitions. [2023-11-29 04:22:09,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902258422806368 [2023-11-29 04:22:09,907 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1054 transitions. [2023-11-29 04:22:09,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1054 transitions. [2023-11-29 04:22:09,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:09,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1054 transitions. [2023-11-29 04:22:09,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 28.486486486486488) internal successors, (1054), 37 states have internal predecessors, (1054), 0 states have call successors, (0), 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 04:22:09,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 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 04:22:09,913 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 73.0) internal successors, (2774), 38 states have internal predecessors, (2774), 0 states have call successors, (0), 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 04:22:09,913 INFO L175 Difference]: Start difference. First operand has 286 places, 178 transitions, 1591 flow. Second operand 37 states and 1054 transitions. [2023-11-29 04:22:09,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 681 transitions, 8402 flow [2023-11-29 04:22:10,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 681 transitions, 7549 flow, removed 48 selfloop flow, removed 34 redundant places. [2023-11-29 04:22:10,419 INFO L231 Difference]: Finished difference. Result has 289 places, 178 transitions, 1535 flow [2023-11-29 04:22:10,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1535, PETRI_PLACES=289, PETRI_TRANSITIONS=178} [2023-11-29 04:22:10,420 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 221 predicate places. [2023-11-29 04:22:10,420 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 178 transitions, 1535 flow [2023-11-29 04:22:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 24.16393442622951) internal successors, (1474), 61 states have internal predecessors, (1474), 0 states have call successors, (0), 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 04:22:10,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:10,420 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:10,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 04:22:10,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 04:22:10,621 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:22:10,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash -312485875, now seen corresponding path program 2 times [2023-11-29 04:22:10,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:10,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074759635] [2023-11-29 04:22:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 69 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:22:11,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:11,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074759635] [2023-11-29 04:22:11,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074759635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:22:11,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616425336] [2023-11-29 04:22:11,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:22:11,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:22:11,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:22:11,623 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:22:11,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 04:22:11,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:22:11,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:22:11,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 04:22:11,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:22:11,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 04:22:11,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:11,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:22:11,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:11,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:22:11,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:11,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:22:11,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:11,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:22:11,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:11,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:22:11,911 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 04:22:11,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:22:12,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 04:22:12,093 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:22:12,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:22:12,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:22:12,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:22:12,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:22:12,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:22:12,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:22:12,773 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 15 treesize of output 7 [2023-11-29 04:22:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:22:12,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:22:13,081 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2109 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_2109) c_~o_0~0.base) (+ c_~o_0~0.offset 8)) 2147483648)) is different from false [2023-11-29 04:22:13,188 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2109 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_204| Int) (v_ArrVal_2104 Int)) (or (< (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |c_ULTIMATE.start_create_fresh_int_array_~i~2#1| 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_2104)) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_204| v_ArrVal_2109) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_204|) 0)))) is different from false [2023-11-29 04:22:13,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:22:13,486 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 51 [2023-11-29 04:22:13,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:22:13,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 04:22:13,498 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 11 treesize of output 7 [2023-11-29 04:22:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 22 trivial. 18 not checked. [2023-11-29 04:22:13,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616425336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:22:13,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:22:13,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 29, 20] total 55 [2023-11-29 04:22:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226032548] [2023-11-29 04:22:13,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:22:13,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 04:22:13,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:13,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 04:22:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2744, Unknown=3, NotChecked=214, Total=3192 [2023-11-29 04:22:13,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2023-11-29 04:22:13,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 178 transitions, 1535 flow. Second operand has 57 states, 57 states have (on average 22.263157894736842) internal successors, (1269), 57 states have internal predecessors, (1269), 0 states have call successors, (0), 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 04:22:13,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:13,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2023-11-29 04:22:13,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:23,495 INFO L124 PetriNetUnfolderBase]: 15698/25935 cut-off events. [2023-11-29 04:22:23,495 INFO L125 PetriNetUnfolderBase]: For 210749/213949 co-relation queries the response was YES. [2023-11-29 04:22:23,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124898 conditions, 25935 events. 15698/25935 cut-off events. For 210749/213949 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 188731 event pairs, 2562 based on Foata normal form. 2269/28133 useless extension candidates. Maximal degree in co-relation 121426. Up to 5037 conditions per place. [2023-11-29 04:22:23,774 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 889 selfloop transitions, 55 changer transitions 0/979 dead transitions. [2023-11-29 04:22:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 979 transitions, 12082 flow [2023-11-29 04:22:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 04:22:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-29 04:22:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1219 transitions. [2023-11-29 04:22:23,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37951432129514323 [2023-11-29 04:22:23,776 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 1219 transitions. [2023-11-29 04:22:23,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 1219 transitions. [2023-11-29 04:22:23,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:23,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 1219 transitions. [2023-11-29 04:22:23,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 27.704545454545453) internal successors, (1219), 44 states have internal predecessors, (1219), 0 states have call successors, (0), 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 04:22:23,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 73.0) internal successors, (3285), 45 states have internal predecessors, (3285), 0 states have call successors, (0), 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 04:22:23,783 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 73.0) internal successors, (3285), 45 states have internal predecessors, (3285), 0 states have call successors, (0), 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 04:22:23,783 INFO L175 Difference]: Start difference. First operand has 289 places, 178 transitions, 1535 flow. Second operand 44 states and 1219 transitions. [2023-11-29 04:22:23,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 979 transitions, 12082 flow [2023-11-29 04:22:24,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 979 transitions, 11433 flow, removed 2 selfloop flow, removed 35 redundant places. [2023-11-29 04:22:24,197 INFO L231 Difference]: Finished difference. Result has 301 places, 182 transitions, 1589 flow [2023-11-29 04:22:24,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1589, PETRI_PLACES=301, PETRI_TRANSITIONS=182} [2023-11-29 04:22:24,198 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 233 predicate places. [2023-11-29 04:22:24,198 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 182 transitions, 1589 flow [2023-11-29 04:22:24,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 22.263157894736842) internal successors, (1269), 57 states have internal predecessors, (1269), 0 states have call successors, (0), 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 04:22:24,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:24,198 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:24,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 04:22:24,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 04:22:24,399 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:22:24,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 62254314, now seen corresponding path program 2 times [2023-11-29 04:22:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:24,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85302846] [2023-11-29 04:22:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:22:25,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85302846] [2023-11-29 04:22:25,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85302846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:22:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585637316] [2023-11-29 04:22:25,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:22:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:22:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:22:25,486 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:22:25,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 04:22:25,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:22:25,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:22:25,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 04:22:25,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:22:25,773 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 04:22:25,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:25,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:22:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:25,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 04:22:26,123 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 17 treesize of output 9 [2023-11-29 04:22:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 76 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:22:26,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:22:28,283 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 25 treesize of output 23 [2023-11-29 04:22:28,286 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 118 treesize of output 110 [2023-11-29 04:22:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:22:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585637316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:22:28,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:22:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 18] total 50 [2023-11-29 04:22:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966225148] [2023-11-29 04:22:28,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:22:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 04:22:28,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 04:22:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2335, Unknown=2, NotChecked=0, Total=2550 [2023-11-29 04:22:29,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2023-11-29 04:22:29,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 182 transitions, 1589 flow. Second operand has 51 states, 51 states have (on average 27.07843137254902) internal successors, (1381), 51 states have internal predecessors, (1381), 0 states have call successors, (0), 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 04:22:29,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:29,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2023-11-29 04:22:29,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:36,106 INFO L124 PetriNetUnfolderBase]: 12500/23321 cut-off events. [2023-11-29 04:22:36,106 INFO L125 PetriNetUnfolderBase]: For 181275/183318 co-relation queries the response was YES. [2023-11-29 04:22:36,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110366 conditions, 23321 events. 12500/23321 cut-off events. For 181275/183318 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 186393 event pairs, 1824 based on Foata normal form. 1585/24831 useless extension candidates. Maximal degree in co-relation 107294. Up to 3735 conditions per place. [2023-11-29 04:22:36,370 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 882 selfloop transitions, 57 changer transitions 0/985 dead transitions. [2023-11-29 04:22:36,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 985 transitions, 12149 flow [2023-11-29 04:22:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 04:22:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 04:22:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1020 transitions. [2023-11-29 04:22:36,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818138875767596 [2023-11-29 04:22:36,372 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1020 transitions. [2023-11-29 04:22:36,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1020 transitions. [2023-11-29 04:22:36,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:36,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1020 transitions. [2023-11-29 04:22:36,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 35.172413793103445) internal successors, (1020), 29 states have internal predecessors, (1020), 0 states have call successors, (0), 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 04:22:36,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 73.0) internal successors, (2190), 30 states have internal predecessors, (2190), 0 states have call successors, (0), 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 04:22:36,375 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 73.0) internal successors, (2190), 30 states have internal predecessors, (2190), 0 states have call successors, (0), 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 04:22:36,375 INFO L175 Difference]: Start difference. First operand has 301 places, 182 transitions, 1589 flow. Second operand 29 states and 1020 transitions. [2023-11-29 04:22:36,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 985 transitions, 12149 flow [2023-11-29 04:22:36,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 985 transitions, 11155 flow, removed 55 selfloop flow, removed 40 redundant places. [2023-11-29 04:22:36,864 INFO L231 Difference]: Finished difference. Result has 293 places, 187 transitions, 1640 flow [2023-11-29 04:22:36,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1640, PETRI_PLACES=293, PETRI_TRANSITIONS=187} [2023-11-29 04:22:36,865 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 225 predicate places. [2023-11-29 04:22:36,865 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 187 transitions, 1640 flow [2023-11-29 04:22:36,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 27.07843137254902) internal successors, (1381), 51 states have internal predecessors, (1381), 0 states have call successors, (0), 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 04:22:36,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:36,865 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:36,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-29 04:22:37,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 04:22:37,066 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:22:37,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1929884572, now seen corresponding path program 2 times [2023-11-29 04:22:37,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:37,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206279534] [2023-11-29 04:22:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:37,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 82 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:22:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206279534] [2023-11-29 04:22:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206279534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:22:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347669665] [2023-11-29 04:22:38,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:22:38,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:22:38,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:22:38,174 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:22:38,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 04:22:38,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:22:38,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:22:38,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 04:22:38,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:22:38,498 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 04:22:38,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:38,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:22:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:22:38,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 04:22:38,769 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 15 treesize of output 7 [2023-11-29 04:22:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 3 proven. 78 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:22:38,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:22:41,470 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 23 treesize of output 21 [2023-11-29 04:22:41,473 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 46 treesize of output 42 [2023-11-29 04:22:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:22:41,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347669665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:22:41,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:22:41,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 19] total 42 [2023-11-29 04:22:41,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405059797] [2023-11-29 04:22:41,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:22:41,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 04:22:41,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:41,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 04:22:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1650, Unknown=3, NotChecked=0, Total=1806 [2023-11-29 04:22:47,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:22:47,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 187 transitions, 1640 flow. Second operand has 43 states, 43 states have (on average 24.41860465116279) internal successors, (1050), 43 states have internal predecessors, (1050), 0 states have call successors, (0), 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 04:22:47,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:47,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:22:47,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:54,949 INFO L124 PetriNetUnfolderBase]: 14090/24715 cut-off events. [2023-11-29 04:22:54,949 INFO L125 PetriNetUnfolderBase]: For 178471/180820 co-relation queries the response was YES. [2023-11-29 04:22:55,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118154 conditions, 24715 events. 14090/24715 cut-off events. For 178471/180820 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 187625 event pairs, 2388 based on Foata normal form. 1793/26435 useless extension candidates. Maximal degree in co-relation 115114. Up to 4763 conditions per place. [2023-11-29 04:22:55,224 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 936 selfloop transitions, 55 changer transitions 0/1037 dead transitions. [2023-11-29 04:22:55,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1037 transitions, 11851 flow [2023-11-29 04:22:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:22:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 04:22:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 974 transitions. [2023-11-29 04:22:55,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44474885844748857 [2023-11-29 04:22:55,226 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 974 transitions. [2023-11-29 04:22:55,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 974 transitions. [2023-11-29 04:22:55,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:55,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 974 transitions. [2023-11-29 04:22:55,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 32.46666666666667) internal successors, (974), 30 states have internal predecessors, (974), 0 states have call successors, (0), 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 04:22:55,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 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 04:22:55,230 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 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 04:22:55,230 INFO L175 Difference]: Start difference. First operand has 293 places, 187 transitions, 1640 flow. Second operand 30 states and 974 transitions. [2023-11-29 04:22:55,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1037 transitions, 11851 flow [2023-11-29 04:22:55,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1037 transitions, 11698 flow, removed 8 selfloop flow, removed 24 redundant places. [2023-11-29 04:22:55,712 INFO L231 Difference]: Finished difference. Result has 302 places, 191 transitions, 1646 flow [2023-11-29 04:22:55,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1646, PETRI_PLACES=302, PETRI_TRANSITIONS=191} [2023-11-29 04:22:55,713 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 234 predicate places. [2023-11-29 04:22:55,713 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 191 transitions, 1646 flow [2023-11-29 04:22:55,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 24.41860465116279) internal successors, (1050), 43 states have internal predecessors, (1050), 0 states have call successors, (0), 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 04:22:55,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:55,714 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:55,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 04:22:55,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-29 04:22:55,914 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:22:55,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:55,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1191542346, now seen corresponding path program 3 times [2023-11-29 04:22:55,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:55,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034204355] [2023-11-29 04:22:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:22:56,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034204355] [2023-11-29 04:22:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034204355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:22:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512348351] [2023-11-29 04:22:56,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:22:56,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:22:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:22:56,802 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:22:56,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 04:22:57,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 04:22:57,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:22:57,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 04:22:57,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:22:57,104 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 23 treesize of output 1 [2023-11-29 04:22:57,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 16 [2023-11-29 04:22:58,122 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 19 treesize of output 7 [2023-11-29 04:22:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 20 proven. 36 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 04:22:58,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:22:58,633 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 25 treesize of output 23 [2023-11-29 04:22:58,635 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 46 treesize of output 42 [2023-11-29 04:22:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 04:22:58,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512348351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:22:58,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:22:58,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 47 [2023-11-29 04:22:58,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415131755] [2023-11-29 04:22:58,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:22:58,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 04:22:58,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 04:22:58,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2094, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 04:22:59,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2023-11-29 04:22:59,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 191 transitions, 1646 flow. Second operand has 48 states, 48 states have (on average 32.958333333333336) internal successors, (1582), 48 states have internal predecessors, (1582), 0 states have call successors, (0), 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 04:22:59,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:59,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2023-11-29 04:22:59,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:01,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:23:10,417 INFO L124 PetriNetUnfolderBase]: 10480/23343 cut-off events. [2023-11-29 04:23:10,417 INFO L125 PetriNetUnfolderBase]: For 179767/181589 co-relation queries the response was YES. [2023-11-29 04:23:10,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108004 conditions, 23343 events. 10480/23343 cut-off events. For 179767/181589 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 212882 event pairs, 1077 based on Foata normal form. 1312/24590 useless extension candidates. Maximal degree in co-relation 105091. Up to 2655 conditions per place. [2023-11-29 04:23:10,694 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 883 selfloop transitions, 56 changer transitions 0/1003 dead transitions. [2023-11-29 04:23:10,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1003 transitions, 12406 flow [2023-11-29 04:23:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 04:23:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 04:23:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1268 transitions. [2023-11-29 04:23:10,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603181617322138 [2023-11-29 04:23:10,697 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1268 transitions. [2023-11-29 04:23:10,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1268 transitions. [2023-11-29 04:23:10,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:10,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1268 transitions. [2023-11-29 04:23:10,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 40.903225806451616) internal successors, (1268), 31 states have internal predecessors, (1268), 0 states have call successors, (0), 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 04:23:10,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:23:10,703 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:23:10,703 INFO L175 Difference]: Start difference. First operand has 302 places, 191 transitions, 1646 flow. Second operand 31 states and 1268 transitions. [2023-11-29 04:23:10,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1003 transitions, 12406 flow [2023-11-29 04:23:11,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1003 transitions, 11342 flow, removed 56 selfloop flow, removed 27 redundant places. [2023-11-29 04:23:11,365 INFO L231 Difference]: Finished difference. Result has 308 places, 199 transitions, 1744 flow [2023-11-29 04:23:11,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1744, PETRI_PLACES=308, PETRI_TRANSITIONS=199} [2023-11-29 04:23:11,366 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 240 predicate places. [2023-11-29 04:23:11,366 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 199 transitions, 1744 flow [2023-11-29 04:23:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 32.958333333333336) internal successors, (1582), 48 states have internal predecessors, (1582), 0 states have call successors, (0), 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 04:23:11,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:11,366 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:11,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 04:23:11,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:23:11,567 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:23:11,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1716861970, now seen corresponding path program 3 times [2023-11-29 04:23:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438094719] [2023-11-29 04:23:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:23:12,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:12,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438094719] [2023-11-29 04:23:12,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438094719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:23:12,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267825310] [2023-11-29 04:23:12,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:23:12,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:23:12,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:23:12,474 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:23:12,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 04:23:12,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 04:23:12,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:12,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 04:23:12,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:12,747 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 23 treesize of output 1 [2023-11-29 04:23:12,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2023-11-29 04:23:13,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:23:13,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 14 [2023-11-29 04:23:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 04:23:13,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:14,038 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 27 treesize of output 25 [2023-11-29 04:23:14,041 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 54 treesize of output 50 [2023-11-29 04:23:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 04:23:14,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267825310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:14,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:23:14,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 48 [2023-11-29 04:23:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125708155] [2023-11-29 04:23:14,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:14,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 04:23:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 04:23:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2176, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 04:23:15,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2023-11-29 04:23:15,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 199 transitions, 1744 flow. Second operand has 49 states, 49 states have (on average 31.020408163265305) internal successors, (1520), 49 states have internal predecessors, (1520), 0 states have call successors, (0), 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 04:23:15,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:15,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2023-11-29 04:23:15,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:17,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:23:28,483 INFO L124 PetriNetUnfolderBase]: 14289/29818 cut-off events. [2023-11-29 04:23:28,483 INFO L125 PetriNetUnfolderBase]: For 224997/227539 co-relation queries the response was YES. [2023-11-29 04:23:28,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140733 conditions, 29818 events. 14289/29818 cut-off events. For 224997/227539 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 265702 event pairs, 1482 based on Foata normal form. 1884/31637 useless extension candidates. Maximal degree in co-relation 137172. Up to 3690 conditions per place. [2023-11-29 04:23:28,829 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 899 selfloop transitions, 56 changer transitions 0/1015 dead transitions. [2023-11-29 04:23:28,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1015 transitions, 11639 flow [2023-11-29 04:23:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 04:23:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 04:23:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1211 transitions. [2023-11-29 04:23:28,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351303579319487 [2023-11-29 04:23:28,831 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1211 transitions. [2023-11-29 04:23:28,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1211 transitions. [2023-11-29 04:23:28,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:28,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1211 transitions. [2023-11-29 04:23:28,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 39.064516129032256) internal successors, (1211), 31 states have internal predecessors, (1211), 0 states have call successors, (0), 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 04:23:28,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:23:28,834 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 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 04:23:28,834 INFO L175 Difference]: Start difference. First operand has 308 places, 199 transitions, 1744 flow. Second operand 31 states and 1211 transitions. [2023-11-29 04:23:28,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1015 transitions, 11639 flow [2023-11-29 04:23:29,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1015 transitions, 11526 flow, removed 6 selfloop flow, removed 24 redundant places. [2023-11-29 04:23:29,845 INFO L231 Difference]: Finished difference. Result has 317 places, 205 transitions, 1861 flow [2023-11-29 04:23:29,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1861, PETRI_PLACES=317, PETRI_TRANSITIONS=205} [2023-11-29 04:23:29,845 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 249 predicate places. [2023-11-29 04:23:29,846 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 205 transitions, 1861 flow [2023-11-29 04:23:29,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 31.020408163265305) internal successors, (1520), 49 states have internal predecessors, (1520), 0 states have call successors, (0), 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 04:23:29,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:29,846 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:29,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 04:23:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:23:30,047 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:23:30,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1683113304, now seen corresponding path program 3 times [2023-11-29 04:23:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433828996] [2023-11-29 04:23:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:23:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433828996] [2023-11-29 04:23:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433828996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:23:31,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905059989] [2023-11-29 04:23:31,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:23:31,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:23:31,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:23:31,041 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:23:31,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 04:23:31,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:23:31,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:31,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 04:23:31,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:31,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 04:23:31,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:31,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:23:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:31,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:23:31,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:31,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:23:31,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:31,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:23:31,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:31,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:23:31,432 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 19 treesize of output 1 [2023-11-29 04:23:31,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-29 04:23:31,711 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:23:31,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:23:31,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:31,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:31,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:31,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:31,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:32,339 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 17 treesize of output 9 [2023-11-29 04:23:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 61 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:23:32,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:33,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:23:33,463 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 41 [2023-11-29 04:23:33,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:23:33,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 37 [2023-11-29 04:23:33,476 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 13 treesize of output 9 [2023-11-29 04:23:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:23:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905059989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:33,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:23:33,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 20] total 54 [2023-11-29 04:23:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175922226] [2023-11-29 04:23:33,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 04:23:33,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 04:23:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2858, Unknown=8, NotChecked=0, Total=3080 [2023-11-29 04:23:34,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2023-11-29 04:23:34,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 205 transitions, 1861 flow. Second operand has 56 states, 56 states have (on average 22.589285714285715) internal successors, (1265), 56 states have internal predecessors, (1265), 0 states have call successors, (0), 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 04:23:34,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:34,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2023-11-29 04:23:34,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:35,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:23:52,165 INFO L124 PetriNetUnfolderBase]: 22247/37596 cut-off events. [2023-11-29 04:23:52,165 INFO L125 PetriNetUnfolderBase]: For 285479/289581 co-relation queries the response was YES. [2023-11-29 04:23:52,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183795 conditions, 37596 events. 22247/37596 cut-off events. For 285479/289581 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 285904 event pairs, 3865 based on Foata normal form. 2924/40453 useless extension candidates. Maximal degree in co-relation 179065. Up to 7622 conditions per place. [2023-11-29 04:23:52,565 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 1134 selfloop transitions, 72 changer transitions 0/1246 dead transitions. [2023-11-29 04:23:52,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1246 transitions, 14275 flow [2023-11-29 04:23:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 04:23:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-29 04:23:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1407 transitions. [2023-11-29 04:23:52,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854794520547945 [2023-11-29 04:23:52,567 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 1407 transitions. [2023-11-29 04:23:52,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 1407 transitions. [2023-11-29 04:23:52,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:52,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 1407 transitions. [2023-11-29 04:23:52,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 28.14) internal successors, (1407), 50 states have internal predecessors, (1407), 0 states have call successors, (0), 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 04:23:52,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 73.0) internal successors, (3723), 51 states have internal predecessors, (3723), 0 states have call successors, (0), 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 04:23:52,572 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 73.0) internal successors, (3723), 51 states have internal predecessors, (3723), 0 states have call successors, (0), 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 04:23:52,572 INFO L175 Difference]: Start difference. First operand has 317 places, 205 transitions, 1861 flow. Second operand 50 states and 1407 transitions. [2023-11-29 04:23:52,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1246 transitions, 14275 flow [2023-11-29 04:23:53,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1246 transitions, 14122 flow, removed 9 selfloop flow, removed 25 redundant places. [2023-11-29 04:23:53,604 INFO L231 Difference]: Finished difference. Result has 345 places, 215 transitions, 1965 flow [2023-11-29 04:23:53,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=1965, PETRI_PLACES=345, PETRI_TRANSITIONS=215} [2023-11-29 04:23:53,605 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 277 predicate places. [2023-11-29 04:23:53,605 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 215 transitions, 1965 flow [2023-11-29 04:23:53,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 22.589285714285715) internal successors, (1265), 56 states have internal predecessors, (1265), 0 states have call successors, (0), 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 04:23:53,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:53,605 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:53,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 04:23:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:23:53,806 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:23:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -759011483, now seen corresponding path program 3 times [2023-11-29 04:23:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5112291] [2023-11-29 04:23:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:23:54,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:54,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5112291] [2023-11-29 04:23:54,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5112291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:23:54,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346591591] [2023-11-29 04:23:54,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:23:54,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:23:54,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:23:54,641 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:23:54,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 04:23:54,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:23:54,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:54,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 04:23:54,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:54,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 04:23:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:54,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:23:54,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:54,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:23:54,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:54,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 04:23:54,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:54,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:23:54,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:23:54,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:23:54,999 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 23 treesize of output 1 [2023-11-29 04:23:55,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 16 [2023-11-29 04:23:55,225 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:23:55,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:23:55,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:55,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:55,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:55,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:55,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:23:55,626 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 19 treesize of output 7 [2023-11-29 04:23:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 20 proven. 49 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:23:55,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:55,950 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2514 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_2514) c_~o_0~0.base) (+ c_~o_0~0.offset 12)) 9223372039002259456)) is different from false [2023-11-29 04:23:56,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:23:56,309 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 39 [2023-11-29 04:23:56,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:23:56,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2023-11-29 04:23:56,319 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 11 treesize of output 7 [2023-11-29 04:23:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 34 trivial. 13 not checked. [2023-11-29 04:23:56,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346591591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:56,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:23:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 49 [2023-11-29 04:23:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797099165] [2023-11-29 04:23:56,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 04:23:56,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 04:23:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2285, Unknown=1, NotChecked=96, Total=2550 [2023-11-29 04:23:56,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:23:56,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 215 transitions, 1965 flow. Second operand has 51 states, 51 states have (on average 24.784313725490197) internal successors, (1264), 51 states have internal predecessors, (1264), 0 states have call successors, (0), 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 04:23:56,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:56,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:23:56,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:58,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:24:15,022 INFO L124 PetriNetUnfolderBase]: 25797/46194 cut-off events. [2023-11-29 04:24:15,022 INFO L125 PetriNetUnfolderBase]: For 417327/422108 co-relation queries the response was YES. [2023-11-29 04:24:15,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225153 conditions, 46194 events. 25797/46194 cut-off events. For 417327/422108 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 377065 event pairs, 2941 based on Foata normal form. 3443/49542 useless extension candidates. Maximal degree in co-relation 220868. Up to 7277 conditions per place. [2023-11-29 04:24:15,534 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 1165 selfloop transitions, 61 changer transitions 0/1279 dead transitions. [2023-11-29 04:24:15,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1279 transitions, 17178 flow [2023-11-29 04:24:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 04:24:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-29 04:24:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1295 transitions. [2023-11-29 04:24:15,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41255176807900606 [2023-11-29 04:24:15,536 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1295 transitions. [2023-11-29 04:24:15,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1295 transitions. [2023-11-29 04:24:15,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:24:15,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1295 transitions. [2023-11-29 04:24:15,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.11627906976744) internal successors, (1295), 43 states have internal predecessors, (1295), 0 states have call successors, (0), 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 04:24:15,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 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 04:24:15,539 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 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 04:24:15,539 INFO L175 Difference]: Start difference. First operand has 345 places, 215 transitions, 1965 flow. Second operand 43 states and 1295 transitions. [2023-11-29 04:24:15,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1279 transitions, 17178 flow [2023-11-29 04:24:17,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1279 transitions, 15481 flow, removed 107 selfloop flow, removed 42 redundant places. [2023-11-29 04:24:17,051 INFO L231 Difference]: Finished difference. Result has 348 places, 223 transitions, 2018 flow [2023-11-29 04:24:17,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2018, PETRI_PLACES=348, PETRI_TRANSITIONS=223} [2023-11-29 04:24:17,051 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 280 predicate places. [2023-11-29 04:24:17,051 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 223 transitions, 2018 flow [2023-11-29 04:24:17,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 24.784313725490197) internal successors, (1264), 51 states have internal predecessors, (1264), 0 states have call successors, (0), 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 04:24:17,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:24:17,052 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:24:17,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 04:24:17,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:24:17,252 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:24:17,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:24:17,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2054550436, now seen corresponding path program 3 times [2023-11-29 04:24:17,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:24:17,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746210322] [2023-11-29 04:24:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:24:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:24:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:24:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 1 proven. 84 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:24:18,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:24:18,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746210322] [2023-11-29 04:24:18,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746210322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:24:18,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137088032] [2023-11-29 04:24:18,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:24:18,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:24:18,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:24:18,060 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:24:18,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b34d474-893e-493b-a0e0-9151c89f462c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 04:24:18,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:24:18,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:24:18,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 04:24:18,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:24:18,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 04:24:18,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:24:18,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:24:18,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:24:18,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:24:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:24:18,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:24:18,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:24:18,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 04:24:18,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:24:18,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 04:24:18,385 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 23 treesize of output 1 [2023-11-29 04:24:18,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 38 treesize of output 18 [2023-11-29 04:24:18,600 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:24:18,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 04:24:18,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 04:24:18,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 04:24:18,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 04:24:18,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 04:24:18,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 04:24:19,019 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 21 treesize of output 9 [2023-11-29 04:24:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 20 proven. 55 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 04:24:19,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:24:19,342 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2590 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_2590) c_~o_0~0.base) (+ c_~o_0~0.offset 12))))) is different from false [2023-11-29 04:24:19,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:24:19,690 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 41 [2023-11-29 04:24:19,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:24:19,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 37 [2023-11-29 04:24:19,702 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 13 treesize of output 9 [2023-11-29 04:24:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 34 trivial. 13 not checked. [2023-11-29 04:24:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137088032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:24:19,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:24:19,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 48 [2023-11-29 04:24:19,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008983190] [2023-11-29 04:24:19,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:24:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 04:24:19,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:24:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 04:24:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2195, Unknown=1, NotChecked=94, Total=2450 [2023-11-29 04:24:19,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-29 04:24:19,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 223 transitions, 2018 flow. Second operand has 50 states, 50 states have (on average 24.82) internal successors, (1241), 50 states have internal predecessors, (1241), 0 states have call successors, (0), 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 04:24:19,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:24:19,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-29 04:24:19,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:24:21,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]