./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.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_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/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_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/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_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:55:30,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:55:30,770 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:55:30,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:55:30,775 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:55:30,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:55:30,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:55:30,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:55:30,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:55:30,800 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:55:30,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:55:30,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:55:30,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:55:30,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:55:30,803 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:55:30,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:55:30,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:55:30,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:55:30,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:55:30,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:55:30,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:55:30,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:55:30,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:55:30,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:55:30,808 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:55:30,809 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:55:30,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:55:30,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:55:30,810 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:55:30,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:55:30,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:55:30,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:55:30,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:55:30,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:30,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:55:30,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:55:30,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:55:30,812 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:55:30,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:55:30,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:55:30,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:55:30,812 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:55:30,813 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:55:30,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:55:30,813 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_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2023-11-28 23:55:31,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:55:31,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:55:31,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:55:31,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:55:31,062 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:55:31,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2023-11-28 23:55:33,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:55:34,028 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:55:34,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2023-11-28 23:55:34,037 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/data/5db889704/3e501ff9e8564cfc8cdc10429807de57/FLAG04fc2e088 [2023-11-28 23:55:34,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/data/5db889704/3e501ff9e8564cfc8cdc10429807de57 [2023-11-28 23:55:34,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:55:34,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:55:34,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:34,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:55:34,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:55:34,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc33b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34, skipping insertion in model container [2023-11-28 23:55:34,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:55:34,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:34,287 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:55:34,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:55:34,327 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:55:34,328 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:55:34,334 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:55:34,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34 WrapperNode [2023-11-28 23:55:34,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:55:34,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:34,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:55:34,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:55:34,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,379 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 294 [2023-11-28 23:55:34,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:55:34,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:55:34,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:55:34,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:55:34,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,411 INFO L175 MemorySlicer]: Split 24 memory accesses to 5 slices as follows [2, 2, 2, 2, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2023-11-28 23:55:34,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:55:34,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:55:34,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:55:34,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:55:34,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (1/1) ... [2023-11-28 23:55:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:55:34,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:34,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:55:34,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:55:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:55:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:55:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:55:34,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:55:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:55:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:55:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 23:55:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:55:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:55:34,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:55:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:55:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 23:55:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 23:55:34,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 23:55:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 23:55:34,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 23:55:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 23:55:34,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 23:55:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:55:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:55:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:55:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:55:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:55:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 23:55:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 23:55:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:55:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:55:34,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:55:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:55:34,513 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:55:34,634 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:55:34,637 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:55:35,138 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:55:35,575 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:55:35,575 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-28 23:55:35,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:35 BoogieIcfgContainer [2023-11-28 23:55:35,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:55:35,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:55:35,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:55:35,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:55:35,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:55:34" (1/3) ... [2023-11-28 23:55:35,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd1a758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:35, skipping insertion in model container [2023-11-28 23:55:35,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:55:34" (2/3) ... [2023-11-28 23:55:35,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd1a758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:55:35, skipping insertion in model container [2023-11-28 23:55:35,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:55:35" (3/3) ... [2023-11-28 23:55:35,584 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-11-28 23:55:35,603 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:55:35,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:55:35,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-28 23:55:35,612 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:55:35,697 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-28 23:55:35,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 235 flow [2023-11-28 23:55:35,769 INFO L124 PetriNetUnfolderBase]: 11/104 cut-off events. [2023-11-28 23:55:35,770 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-28 23:55:35,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 11/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 251 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-28 23:55:35,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 235 flow [2023-11-28 23:55:35,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 103 transitions, 224 flow [2023-11-28 23:55:35,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:55:35,794 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;@270289c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:55:35,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-28 23:55:35,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:55:35,798 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-28 23:55:35,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:55:35,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:35,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-28 23:55:35,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:35,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1038702, now seen corresponding path program 1 times [2023-11-28 23:55:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:35,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743441934] [2023-11-28 23:55:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:35,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743441934] [2023-11-28 23:55:36,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743441934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:36,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:36,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:55:36,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836680648] [2023-11-28 23:55:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:36,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:36,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:36,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:55:36,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:36,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:55:36,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:36,688 INFO L124 PetriNetUnfolderBase]: 1287/2252 cut-off events. [2023-11-28 23:55:36,688 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-28 23:55:36,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2252 events. 1287/2252 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13401 event pairs, 991 based on Foata normal form. 3/1589 useless extension candidates. Maximal degree in co-relation 3429. Up to 1784 conditions per place. [2023-11-28 23:55:36,711 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 54 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-11-28 23:55:36,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 110 transitions, 366 flow [2023-11-28 23:55:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:55:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2023-11-28 23:55:36,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261682242990654 [2023-11-28 23:55:36,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 268 transitions. [2023-11-28 23:55:36,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 268 transitions. [2023-11-28 23:55:36,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:36,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 268 transitions. [2023-11-28 23:55:36,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,738 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,739 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 224 flow. Second operand 4 states and 268 transitions. [2023-11-28 23:55:36,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 110 transitions, 366 flow [2023-11-28 23:55:36,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 110 transitions, 354 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-28 23:55:36,754 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 296 flow [2023-11-28 23:55:36,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-11-28 23:55:36,759 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2023-11-28 23:55:36,759 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 296 flow [2023-11-28 23:55:36,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:36,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:36,760 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 23:55:36,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:55:36,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:36,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:36,761 INFO L85 PathProgramCache]: Analyzing trace with hash 880253327, now seen corresponding path program 1 times [2023-11-28 23:55:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760159140] [2023-11-28 23:55:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:36,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:36,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760159140] [2023-11-28 23:55:36,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760159140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:36,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879079589] [2023-11-28 23:55:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:36,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:36,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:36,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:36,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:55:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:55:37,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:37,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:55:37,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879079589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:37,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:55:37,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 23:55:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925409623] [2023-11-28 23:55:37,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:37,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:55:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:37,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:55:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:55:37,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:55:37,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:37,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:55:37,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:37,564 INFO L124 PetriNetUnfolderBase]: 1287/2249 cut-off events. [2023-11-28 23:55:37,565 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-28 23:55:37,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 2249 events. 1287/2249 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13336 event pairs, 991 based on Foata normal form. 3/1591 useless extension candidates. Maximal degree in co-relation 4046. Up to 1769 conditions per place. [2023-11-28 23:55:37,586 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 44 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2023-11-28 23:55:37,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 406 flow [2023-11-28 23:55:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:55:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:55:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 358 transitions. [2023-11-28 23:55:37,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.557632398753894 [2023-11-28 23:55:37,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 358 transitions. [2023-11-28 23:55:37,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 358 transitions. [2023-11-28 23:55:37,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:37,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 358 transitions. [2023-11-28 23:55:37,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,597 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 296 flow. Second operand 6 states and 358 transitions. [2023-11-28 23:55:37,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 406 flow [2023-11-28 23:55:37,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:55:37,601 INFO L231 Difference]: Finished difference. Result has 102 places, 107 transitions, 318 flow [2023-11-28 23:55:37,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=102, PETRI_TRANSITIONS=107} [2023-11-28 23:55:37,602 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2023-11-28 23:55:37,603 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 107 transitions, 318 flow [2023-11-28 23:55:37,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:37,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:55:37,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:55:37,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:37,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:37,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:37,805 INFO L85 PathProgramCache]: Analyzing trace with hash 881187563, now seen corresponding path program 1 times [2023-11-28 23:55:37,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:37,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425137914] [2023-11-28 23:55:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:37,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:37,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425137914] [2023-11-28 23:55:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425137914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:37,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:37,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:37,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994676440] [2023-11-28 23:55:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:37,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-28 23:55:37,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 107 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:37,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:37,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-28 23:55:37,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:38,360 INFO L124 PetriNetUnfolderBase]: 1288/2266 cut-off events. [2023-11-28 23:55:38,360 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-28 23:55:38,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 2266 events. 1288/2266 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13369 event pairs, 991 based on Foata normal form. 4/1608 useless extension candidates. Maximal degree in co-relation 4082. Up to 1784 conditions per place. [2023-11-28 23:55:38,382 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 65 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2023-11-28 23:55:38,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 478 flow [2023-11-28 23:55:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:55:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-28 23:55:38,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700934579439252 [2023-11-28 23:55:38,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-28 23:55:38,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-28 23:55:38,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:38,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-28 23:55:38,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,389 INFO L175 Difference]: Start difference. First operand has 102 places, 107 transitions, 318 flow. Second operand 4 states and 244 transitions. [2023-11-28 23:55:38,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 478 flow [2023-11-28 23:55:38,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 440 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-28 23:55:38,394 INFO L231 Difference]: Finished difference. Result has 101 places, 110 transitions, 344 flow [2023-11-28 23:55:38,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=101, PETRI_TRANSITIONS=110} [2023-11-28 23:55:38,395 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -1 predicate places. [2023-11-28 23:55:38,395 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 110 transitions, 344 flow [2023-11-28 23:55:38,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:38,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-28 23:55:38,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:55:38,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:38,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1518050420, now seen corresponding path program 1 times [2023-11-28 23:55:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:38,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126147567] [2023-11-28 23:55:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:38,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126147567] [2023-11-28 23:55:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126147567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:38,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698500004] [2023-11-28 23:55:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:38,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:38,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:38,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:38,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:55:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:38,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:55:38,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:38,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:38,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698500004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:38,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 23:55:38,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151276101] [2023-11-28 23:55:38,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:38,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:55:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:38,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:55:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:55:38,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:55:38,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 110 transitions, 344 flow. Second operand has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:38,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:38,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:55:38,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:39,192 INFO L124 PetriNetUnfolderBase]: 1297/2302 cut-off events. [2023-11-28 23:55:39,193 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-11-28 23:55:39,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 2302 events. 1297/2302 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13619 event pairs, 991 based on Foata normal form. 9/1648 useless extension candidates. Maximal degree in co-relation 4093. Up to 1789 conditions per place. [2023-11-28 23:55:39,210 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 54 selfloop transitions, 37 changer transitions 0/137 dead transitions. [2023-11-28 23:55:39,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 137 transitions, 667 flow [2023-11-28 23:55:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:55:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:55:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2023-11-28 23:55:39,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485981308411215 [2023-11-28 23:55:39,212 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2023-11-28 23:55:39,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2023-11-28 23:55:39,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:39,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2023-11-28 23:55:39,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,219 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,219 INFO L175 Difference]: Start difference. First operand has 101 places, 110 transitions, 344 flow. Second operand 10 states and 587 transitions. [2023-11-28 23:55:39,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 137 transitions, 667 flow [2023-11-28 23:55:39,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 137 transitions, 667 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:55:39,224 INFO L231 Difference]: Finished difference. Result has 113 places, 137 transitions, 609 flow [2023-11-28 23:55:39,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=113, PETRI_TRANSITIONS=137} [2023-11-28 23:55:39,225 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2023-11-28 23:55:39,225 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 137 transitions, 609 flow [2023-11-28 23:55:39,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:39,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:39,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:55:39,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:39,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:39,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:39,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1547011762, now seen corresponding path program 1 times [2023-11-28 23:55:39,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:39,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923352503] [2023-11-28 23:55:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:39,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:39,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923352503] [2023-11-28 23:55:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923352503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:39,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:55:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230346055] [2023-11-28 23:55:39,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:39,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:55:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:39,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:55:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:55:39,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2023-11-28 23:55:39,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 609 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:39,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2023-11-28 23:55:39,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:39,858 INFO L124 PetriNetUnfolderBase]: 1296/2301 cut-off events. [2023-11-28 23:55:39,858 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-28 23:55:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 2301 events. 1296/2301 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13567 event pairs, 991 based on Foata normal form. 1/1645 useless extension candidates. Maximal degree in co-relation 4233. Up to 1815 conditions per place. [2023-11-28 23:55:39,876 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 85 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-11-28 23:55:39,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 136 transitions, 779 flow [2023-11-28 23:55:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:55:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:55:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-11-28 23:55:39,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67601246105919 [2023-11-28 23:55:39,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-11-28 23:55:39,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-11-28 23:55:39,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:39,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-11-28 23:55:39,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,881 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 609 flow. Second operand 3 states and 217 transitions. [2023-11-28 23:55:39,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 136 transitions, 779 flow [2023-11-28 23:55:39,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 742 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-28 23:55:39,887 INFO L231 Difference]: Finished difference. Result has 113 places, 136 transitions, 572 flow [2023-11-28 23:55:39,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=572, PETRI_PLACES=113, PETRI_TRANSITIONS=136} [2023-11-28 23:55:39,888 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2023-11-28 23:55:39,889 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 136 transitions, 572 flow [2023-11-28 23:55:39,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:39,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:39,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:55:39,890 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:39,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1735504301, now seen corresponding path program 1 times [2023-11-28 23:55:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:39,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265095207] [2023-11-28 23:55:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:39,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:55:39,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265095207] [2023-11-28 23:55:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265095207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:55:39,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:55:39,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:55:39,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852429781] [2023-11-28 23:55:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:55:39,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:55:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:39,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:55:39,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:55:39,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2023-11-28 23:55:39,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 136 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:39,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:39,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2023-11-28 23:55:39,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:40,467 INFO L124 PetriNetUnfolderBase]: 1294/2299 cut-off events. [2023-11-28 23:55:40,467 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-28 23:55:40,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4310 conditions, 2299 events. 1294/2299 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13546 event pairs, 991 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 4284. Up to 1802 conditions per place. [2023-11-28 23:55:40,488 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 73 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2023-11-28 23:55:40,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 134 transitions, 729 flow [2023-11-28 23:55:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:55:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:55:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-11-28 23:55:40,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.647196261682243 [2023-11-28 23:55:40,491 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-11-28 23:55:40,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-11-28 23:55:40,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:40,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-11-28 23:55:40,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:40,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:40,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:40,493 INFO L175 Difference]: Start difference. First operand has 113 places, 136 transitions, 572 flow. Second operand 4 states and 277 transitions. [2023-11-28 23:55:40,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 134 transitions, 729 flow [2023-11-28 23:55:40,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 134 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:55:40,497 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 569 flow [2023-11-28 23:55:40,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2023-11-28 23:55:40,498 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2023-11-28 23:55:40,498 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 569 flow [2023-11-28 23:55:40,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:40,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:40,499 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-28 23:55:40,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:55:40,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:40,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:40,499 INFO L85 PathProgramCache]: Analyzing trace with hash 225327029, now seen corresponding path program 2 times [2023-11-28 23:55:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:40,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601064344] [2023-11-28 23:55:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:40,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:40,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601064344] [2023-11-28 23:55:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601064344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:40,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070586175] [2023-11-28 23:55:40,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:55:40,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:40,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:40,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:40,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:55:40,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:55:40,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:55:40,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:55:40,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:55:40,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:55:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070586175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:40,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-28 23:55:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751301621] [2023-11-28 23:55:40,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:55:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:55:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:55:40,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:55:40,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 569 flow. Second operand has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:40,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:40,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:55:40,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:41,552 INFO L124 PetriNetUnfolderBase]: 1297/2310 cut-off events. [2023-11-28 23:55:41,552 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-28 23:55:41,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 2310 events. 1297/2310 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13607 event pairs, 991 based on Foata normal form. 4/1659 useless extension candidates. Maximal degree in co-relation 4213. Up to 1785 conditions per place. [2023-11-28 23:55:41,568 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 49 selfloop transitions, 47 changer transitions 0/142 dead transitions. [2023-11-28 23:55:41,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 142 transitions, 816 flow [2023-11-28 23:55:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 23:55:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-28 23:55:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1273 transitions. [2023-11-28 23:55:41,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957165109034268 [2023-11-28 23:55:41,574 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1273 transitions. [2023-11-28 23:55:41,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1273 transitions. [2023-11-28 23:55:41,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:41,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1273 transitions. [2023-11-28 23:55:41,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 53.041666666666664) internal successors, (1273), 24 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 107.0) internal successors, (2675), 25 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,586 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 107.0) internal successors, (2675), 25 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,587 INFO L175 Difference]: Start difference. First operand has 114 places, 134 transitions, 569 flow. Second operand 24 states and 1273 transitions. [2023-11-28 23:55:41,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 142 transitions, 816 flow [2023-11-28 23:55:41,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 142 transitions, 788 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:55:41,592 INFO L231 Difference]: Finished difference. Result has 135 places, 142 transitions, 714 flow [2023-11-28 23:55:41,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=714, PETRI_PLACES=135, PETRI_TRANSITIONS=142} [2023-11-28 23:55:41,593 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 33 predicate places. [2023-11-28 23:55:41,593 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 142 transitions, 714 flow [2023-11-28 23:55:41,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:41,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:41,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:41,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:55:41,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-28 23:55:41,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:41,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1684921452, now seen corresponding path program 1 times [2023-11-28 23:55:41,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:41,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127385940] [2023-11-28 23:55:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:41,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:55:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127385940] [2023-11-28 23:55:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127385940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479458805] [2023-11-28 23:55:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:42,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:42,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:42,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:42,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:55:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:42,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:55:42,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:42,272 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 [2023-11-28 23:55:42,293 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 [2023-11-28 23:55:42,351 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:55:42,351 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 [2023-11-28 23:55:42,383 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 [2023-11-28 23:55:42,415 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 [2023-11-28 23:55:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:55:42,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:42,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:42,580 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 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-28 23:55:42,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:42,591 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 [2023-11-28 23:55:42,597 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 [2023-11-28 23:55:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:55:42,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479458805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:42,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:42,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-28 23:55:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6579962] [2023-11-28 23:55:42,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:42,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:55:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:55:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=165, Unknown=2, NotChecked=0, Total=210 [2023-11-28 23:55:42,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 107 [2023-11-28 23:55:42,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 142 transitions, 714 flow. Second operand has 15 states, 15 states have (on average 38.8) internal successors, (582), 15 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:42,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:42,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 107 [2023-11-28 23:55:42,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:43,592 INFO L124 PetriNetUnfolderBase]: 1295/2313 cut-off events. [2023-11-28 23:55:43,592 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2023-11-28 23:55:43,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4430 conditions, 2313 events. 1295/2313 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13590 event pairs, 991 based on Foata normal form. 0/1654 useless extension candidates. Maximal degree in co-relation 4343. Up to 1768 conditions per place. [2023-11-28 23:55:43,606 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 93 selfloop transitions, 27 changer transitions 0/150 dead transitions. [2023-11-28 23:55:43,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 150 transitions, 970 flow [2023-11-28 23:55:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:55:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 23:55:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 489 transitions. [2023-11-28 23:55:43,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154630416312659 [2023-11-28 23:55:43,608 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 489 transitions. [2023-11-28 23:55:43,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 489 transitions. [2023-11-28 23:55:43,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:43,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 489 transitions. [2023-11-28 23:55:43,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 44.45454545454545) internal successors, (489), 11 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:43,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:43,612 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:43,612 INFO L175 Difference]: Start difference. First operand has 135 places, 142 transitions, 714 flow. Second operand 11 states and 489 transitions. [2023-11-28 23:55:43,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 150 transitions, 970 flow [2023-11-28 23:55:43,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 150 transitions, 859 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-11-28 23:55:43,617 INFO L231 Difference]: Finished difference. Result has 134 places, 141 transitions, 655 flow [2023-11-28 23:55:43,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=655, PETRI_PLACES=134, PETRI_TRANSITIONS=141} [2023-11-28 23:55:43,618 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 32 predicate places. [2023-11-28 23:55:43,618 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 141 transitions, 655 flow [2023-11-28 23:55:43,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.8) internal successors, (582), 15 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:43,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:43,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:43,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:55:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-28 23:55:43,820 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:43,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash 692893235, now seen corresponding path program 1 times [2023-11-28 23:55:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:43,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476118350] [2023-11-28 23:55:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:43,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:55:44,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476118350] [2023-11-28 23:55:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476118350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46135003] [2023-11-28 23:55:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:44,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:44,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:44,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:44,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:55:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:44,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:55:44,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:44,306 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 [2023-11-28 23:55:44,323 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 [2023-11-28 23:55:44,355 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:55:44,356 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 [2023-11-28 23:55:44,378 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 [2023-11-28 23:55:44,403 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 [2023-11-28 23:55:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:55:44,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:44,443 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_212 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_212) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-11-28 23:55:44,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:44,493 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 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-28 23:55:44,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:44,502 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 [2023-11-28 23:55:44,511 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 [2023-11-28 23:55:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-28 23:55:44,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46135003] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:44,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:44,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-28 23:55:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798946278] [2023-11-28 23:55:44,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:44,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:55:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:55:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=122, Unknown=1, NotChecked=22, Total=182 [2023-11-28 23:55:44,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 107 [2023-11-28 23:55:44,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 141 transitions, 655 flow. Second operand has 14 states, 14 states have (on average 38.785714285714285) internal successors, (543), 14 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:44,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:44,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 107 [2023-11-28 23:55:44,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:45,269 INFO L124 PetriNetUnfolderBase]: 1295/2312 cut-off events. [2023-11-28 23:55:45,269 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-28 23:55:45,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4402 conditions, 2312 events. 1295/2312 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13565 event pairs, 991 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 4319. Up to 1772 conditions per place. [2023-11-28 23:55:45,285 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 86 selfloop transitions, 28 changer transitions 0/144 dead transitions. [2023-11-28 23:55:45,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 887 flow [2023-11-28 23:55:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:55:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 23:55:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 481 transitions. [2023-11-28 23:55:45,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086661002548853 [2023-11-28 23:55:45,288 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 481 transitions. [2023-11-28 23:55:45,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 481 transitions. [2023-11-28 23:55:45,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:45,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 481 transitions. [2023-11-28 23:55:45,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.72727272727273) internal successors, (481), 11 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:45,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:45,292 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:45,292 INFO L175 Difference]: Start difference. First operand has 134 places, 141 transitions, 655 flow. Second operand 11 states and 481 transitions. [2023-11-28 23:55:45,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 887 flow [2023-11-28 23:55:45,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 877 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:55:45,298 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 697 flow [2023-11-28 23:55:45,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=697, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2023-11-28 23:55:45,299 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 39 predicate places. [2023-11-28 23:55:45,299 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 697 flow [2023-11-28 23:55:45,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.785714285714285) internal successors, (543), 14 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:45,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:45,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:45,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:55:45,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-28 23:55:45,500 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:45,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:45,501 INFO L85 PathProgramCache]: Analyzing trace with hash 4853757, now seen corresponding path program 1 times [2023-11-28 23:55:45,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:45,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632703578] [2023-11-28 23:55:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:45,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632703578] [2023-11-28 23:55:45,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632703578] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780860225] [2023-11-28 23:55:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:45,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:45,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:45,926 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:45,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:55:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:46,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-28 23:55:46,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:46,064 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 [2023-11-28 23:55:46,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,072 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 [2023-11-28 23:55:46,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,078 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 [2023-11-28 23:55:46,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,085 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 [2023-11-28 23:55:46,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,091 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 [2023-11-28 23:55:46,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,097 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 [2023-11-28 23:55:46,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,106 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 [2023-11-28 23:55:46,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,114 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 [2023-11-28 23:55:46,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,120 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 [2023-11-28 23:55:46,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,123 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 [2023-11-28 23:55:46,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,128 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 [2023-11-28 23:55:46,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,132 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 [2023-11-28 23:55:46,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,140 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 [2023-11-28 23:55:46,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,147 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 [2023-11-28 23:55:46,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,154 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 [2023-11-28 23:55:46,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,162 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 [2023-11-28 23:55:46,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,172 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 [2023-11-28 23:55:46,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-28 23:55:46,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,190 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 [2023-11-28 23:55:46,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,198 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 [2023-11-28 23:55:46,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,205 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 [2023-11-28 23:55:46,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,210 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 [2023-11-28 23:55:46,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,215 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 [2023-11-28 23:55:46,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:46,219 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 [2023-11-28 23:55:46,240 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 [2023-11-28 23:55:46,284 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-28 23:55:46,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-28 23:55:46,324 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 [2023-11-28 23:55:46,366 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:55:46,366 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 [2023-11-28 23:55:46,394 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 [2023-11-28 23:55:46,448 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 [2023-11-28 23:55:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:46,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:46,548 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_256 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_256) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-11-28 23:55:50,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:50,722 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 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-28 23:55:50,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:50,735 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 143 treesize of output 135 [2023-11-28 23:55:50,749 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 27 treesize of output 25 [2023-11-28 23:55:50,762 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 28 treesize of output 24 [2023-11-28 23:55:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-28 23:55:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780860225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:50,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:50,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-11-28 23:55:50,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909403077] [2023-11-28 23:55:50,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:50,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:55:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:55:50,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=386, Unknown=2, NotChecked=40, Total=506 [2023-11-28 23:55:50,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2023-11-28 23:55:50,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 697 flow. Second operand has 23 states, 23 states have (on average 34.56521739130435) internal successors, (795), 23 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:50,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:55:50,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2023-11-28 23:55:50,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:55:52,033 INFO L124 PetriNetUnfolderBase]: 1294/2308 cut-off events. [2023-11-28 23:55:52,033 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-28 23:55:52,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4418 conditions, 2308 events. 1294/2308 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13547 event pairs, 991 based on Foata normal form. 1/1656 useless extension candidates. Maximal degree in co-relation 4334. Up to 1769 conditions per place. [2023-11-28 23:55:52,048 INFO L140 encePairwiseOnDemand]: 87/107 looper letters, 88 selfloop transitions, 31 changer transitions 0/145 dead transitions. [2023-11-28 23:55:52,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 145 transitions, 943 flow [2023-11-28 23:55:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:55:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 23:55:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 549 transitions. [2023-11-28 23:55:52,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664886515353805 [2023-11-28 23:55:52,051 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 549 transitions. [2023-11-28 23:55:52,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 549 transitions. [2023-11-28 23:55:52,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:55:52,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 549 transitions. [2023-11-28 23:55:52,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 39.214285714285715) internal successors, (549), 14 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:52,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 107.0) internal successors, (1605), 15 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:52,057 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 107.0) internal successors, (1605), 15 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:52,057 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 697 flow. Second operand 14 states and 549 transitions. [2023-11-28 23:55:52,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 145 transitions, 943 flow [2023-11-28 23:55:52,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 145 transitions, 885 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-28 23:55:52,062 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 709 flow [2023-11-28 23:55:52,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=709, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2023-11-28 23:55:52,063 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 43 predicate places. [2023-11-28 23:55:52,063 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 709 flow [2023-11-28 23:55:52,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 34.56521739130435) internal successors, (795), 23 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:55:52,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:55:52,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:52,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:55:52,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:52,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:55:52,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash 150467532, now seen corresponding path program 1 times [2023-11-28 23:55:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:52,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189775846] [2023-11-28 23:55:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189775846] [2023-11-28 23:55:52,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189775846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:52,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999583076] [2023-11-28 23:55:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:52,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:52,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:52,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:52,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:55:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:52,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-28 23:55:52,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:52,826 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 [2023-11-28 23:55:52,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,834 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 [2023-11-28 23:55:52,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,842 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 [2023-11-28 23:55:52,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-28 23:55:52,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,863 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 [2023-11-28 23:55:52,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,869 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 [2023-11-28 23:55:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,880 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 [2023-11-28 23:55:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,886 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 [2023-11-28 23:55:52,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,891 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 [2023-11-28 23:55:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,896 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 [2023-11-28 23:55:52,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,900 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 [2023-11-28 23:55:52,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,905 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 [2023-11-28 23:55:52,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,915 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 [2023-11-28 23:55:52,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,920 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 [2023-11-28 23:55:52,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,925 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 [2023-11-28 23:55:52,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,930 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 [2023-11-28 23:55:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,934 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 [2023-11-28 23:55:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,938 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 [2023-11-28 23:55:52,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,943 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 [2023-11-28 23:55:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,948 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 [2023-11-28 23:55:52,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,957 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 [2023-11-28 23:55:52,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,962 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 [2023-11-28 23:55:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,968 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 [2023-11-28 23:55:52,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:55:52,974 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 [2023-11-28 23:55:53,000 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 [2023-11-28 23:55:53,067 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-28 23:55:53,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-28 23:55:53,106 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 [2023-11-28 23:55:53,200 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-28 23:55:53,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-28 23:55:53,229 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 [2023-11-28 23:55:53,257 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 [2023-11-28 23:55:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:53,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:53,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:53,578 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 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-28 23:55:53,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:55:53,590 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 63 treesize of output 59 [2023-11-28 23:55:53,598 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 24 treesize of output 22 [2023-11-28 23:55:53,606 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 [2023-11-28 23:55:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:55:53,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999583076] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:53,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:53,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-28 23:55:53,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243691470] [2023-11-28 23:55:53,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 23:55:53,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 23:55:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=459, Unknown=6, NotChecked=0, Total=552 [2023-11-28 23:55:57,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-28 23:56:02,035 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] [2023-11-28 23:56:02,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2023-11-28 23:56:02,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 709 flow. Second operand has 24 states, 24 states have (on average 34.583333333333336) internal successors, (830), 24 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:02,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:02,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2023-11-28 23:56:02,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:03,179 INFO L124 PetriNetUnfolderBase]: 1294/2308 cut-off events. [2023-11-28 23:56:03,180 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-11-28 23:56:03,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 2308 events. 1294/2308 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13552 event pairs, 991 based on Foata normal form. 4/1661 useless extension candidates. Maximal degree in co-relation 4361. Up to 1773 conditions per place. [2023-11-28 23:56:03,196 INFO L140 encePairwiseOnDemand]: 86/107 looper letters, 82 selfloop transitions, 35 changer transitions 1/144 dead transitions. [2023-11-28 23:56:03,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 144 transitions, 967 flow [2023-11-28 23:56:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:56:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-28 23:56:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 641 transitions. [2023-11-28 23:56:03,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523914238592633 [2023-11-28 23:56:03,200 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 641 transitions. [2023-11-28 23:56:03,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 641 transitions. [2023-11-28 23:56:03,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:03,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 641 transitions. [2023-11-28 23:56:03,203 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) [2023-11-28 23:56:03,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:03,207 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:03,207 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 709 flow. Second operand 17 states and 641 transitions. [2023-11-28 23:56:03,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 144 transitions, 967 flow [2023-11-28 23:56:03,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 919 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-28 23:56:03,214 INFO L231 Difference]: Finished difference. Result has 155 places, 142 transitions, 760 flow [2023-11-28 23:56:03,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=760, PETRI_PLACES=155, PETRI_TRANSITIONS=142} [2023-11-28 23:56:03,215 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 53 predicate places. [2023-11-28 23:56:03,215 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 142 transitions, 760 flow [2023-11-28 23:56:03,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 34.583333333333336) internal successors, (830), 24 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:03,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:03,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:03,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:56:03,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:03,422 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:03,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1979652480, now seen corresponding path program 1 times [2023-11-28 23:56:03,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:03,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164794450] [2023-11-28 23:56:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:03,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164794450] [2023-11-28 23:56:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164794450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:56:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894477967] [2023-11-28 23:56:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:56:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:56:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:56:03,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 107 [2023-11-28 23:56:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 142 transitions, 760 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 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) [2023-11-28 23:56:03,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:03,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 107 [2023-11-28 23:56:03,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:03,923 INFO L124 PetriNetUnfolderBase]: 1294/2302 cut-off events. [2023-11-28 23:56:03,923 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2023-11-28 23:56:03,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4433 conditions, 2302 events. 1294/2302 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13489 event pairs, 991 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 4397. Up to 1818 conditions per place. [2023-11-28 23:56:03,937 INFO L140 encePairwiseOnDemand]: 93/107 looper letters, 92 selfloop transitions, 20 changer transitions 0/144 dead transitions. [2023-11-28 23:56:03,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 144 transitions, 988 flow [2023-11-28 23:56:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:56:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:56:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 305 transitions. [2023-11-28 23:56:03,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750778816199377 [2023-11-28 23:56:03,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 305 transitions. [2023-11-28 23:56:03,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 305 transitions. [2023-11-28 23:56:03,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:03,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 305 transitions. [2023-11-28 23:56:03,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:03,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:03,942 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:03,942 INFO L175 Difference]: Start difference. First operand has 155 places, 142 transitions, 760 flow. Second operand 6 states and 305 transitions. [2023-11-28 23:56:03,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 144 transitions, 988 flow [2023-11-28 23:56:03,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 897 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-28 23:56:03,950 INFO L231 Difference]: Finished difference. Result has 148 places, 144 transitions, 739 flow [2023-11-28 23:56:03,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=148, PETRI_TRANSITIONS=144} [2023-11-28 23:56:03,951 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 46 predicate places. [2023-11-28 23:56:03,951 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 144 transitions, 739 flow [2023-11-28 23:56:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 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) [2023-11-28 23:56:03,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:03,951 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:03,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 23:56:03,952 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:03,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:03,952 INFO L85 PathProgramCache]: Analyzing trace with hash -876037248, now seen corresponding path program 1 times [2023-11-28 23:56:03,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:03,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991312229] [2023-11-28 23:56:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-28 23:56:04,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991312229] [2023-11-28 23:56:04,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991312229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951650084] [2023-11-28 23:56:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:04,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:04,129 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:04,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:56:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:04,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:56:04,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-28 23:56:04,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-28 23:56:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951650084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:04,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:04,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-28 23:56:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388487938] [2023-11-28 23:56:04,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:04,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:56:04,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:56:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:56:04,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:56:04,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 144 transitions, 739 flow. Second operand has 19 states, 19 states have (on average 50.21052631578947) internal successors, (954), 19 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:04,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:04,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:56:04,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:05,612 INFO L124 PetriNetUnfolderBase]: 2574/4540 cut-off events. [2023-11-28 23:56:05,612 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2023-11-28 23:56:05,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8564 conditions, 4540 events. 2574/4540 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28604 event pairs, 1982 based on Foata normal form. 2/3276 useless extension candidates. Maximal degree in co-relation 8510. Up to 1794 conditions per place. [2023-11-28 23:56:05,636 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 103 selfloop transitions, 51 changer transitions 0/197 dead transitions. [2023-11-28 23:56:05,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 197 transitions, 1276 flow [2023-11-28 23:56:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:56:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:56:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 603 transitions. [2023-11-28 23:56:05,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5635514018691589 [2023-11-28 23:56:05,638 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 603 transitions. [2023-11-28 23:56:05,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 603 transitions. [2023-11-28 23:56:05,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:05,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 603 transitions. [2023-11-28 23:56:05,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 60.3) internal successors, (603), 10 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,642 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,642 INFO L175 Difference]: Start difference. First operand has 148 places, 144 transitions, 739 flow. Second operand 10 states and 603 transitions. [2023-11-28 23:56:05,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 197 transitions, 1276 flow [2023-11-28 23:56:05,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 197 transitions, 1237 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-28 23:56:05,651 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 874 flow [2023-11-28 23:56:05,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=874, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2023-11-28 23:56:05,652 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 52 predicate places. [2023-11-28 23:56:05,652 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 874 flow [2023-11-28 23:56:05,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.21052631578947) internal successors, (954), 19 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:05,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:05,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:56:05,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:56:05,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:05,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash 589766568, now seen corresponding path program 1 times [2023-11-28 23:56:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:05,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002119862] [2023-11-28 23:56:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:05,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:05,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:05,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002119862] [2023-11-28 23:56:05,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002119862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:05,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:05,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:56:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61649396] [2023-11-28 23:56:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:05,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:56:05,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:56:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:05,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 107 [2023-11-28 23:56:05,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 874 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:05,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:05,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 107 [2023-11-28 23:56:05,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:07,042 INFO L124 PetriNetUnfolderBase]: 5168/8318 cut-off events. [2023-11-28 23:56:07,042 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-11-28 23:56:07,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15915 conditions, 8318 events. 5168/8318 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54771 event pairs, 1880 based on Foata normal form. 244/6200 useless extension candidates. Maximal degree in co-relation 15863. Up to 5507 conditions per place. [2023-11-28 23:56:07,084 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 144 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2023-11-28 23:56:07,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 191 transitions, 1256 flow [2023-11-28 23:56:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:56:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-11-28 23:56:07,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7149532710280374 [2023-11-28 23:56:07,085 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-11-28 23:56:07,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-11-28 23:56:07,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:07,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-11-28 23:56:07,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:07,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:07,088 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:07,088 INFO L175 Difference]: Start difference. First operand has 154 places, 150 transitions, 874 flow. Second operand 4 states and 306 transitions. [2023-11-28 23:56:07,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 191 transitions, 1256 flow [2023-11-28 23:56:07,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 191 transitions, 1226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:56:07,097 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 873 flow [2023-11-28 23:56:07,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=873, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2023-11-28 23:56:07,098 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 56 predicate places. [2023-11-28 23:56:07,098 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 873 flow [2023-11-28 23:56:07,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:07,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:07,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:07,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:56:07,099 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:07,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash -264885914, now seen corresponding path program 1 times [2023-11-28 23:56:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:07,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263607498] [2023-11-28 23:56:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263607498] [2023-11-28 23:56:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263607498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:56:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055814447] [2023-11-28 23:56:07,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:07,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:56:07,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:56:07,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:56:07,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2023-11-28 23:56:07,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 873 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:07,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:07,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2023-11-28 23:56:07,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:08,593 INFO L124 PetriNetUnfolderBase]: 6548/11404 cut-off events. [2023-11-28 23:56:08,593 INFO L125 PetriNetUnfolderBase]: For 4061/4397 co-relation queries the response was YES. [2023-11-28 23:56:08,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24785 conditions, 11404 events. 6548/11404 cut-off events. For 4061/4397 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 84867 event pairs, 2932 based on Foata normal form. 0/8702 useless extension candidates. Maximal degree in co-relation 24730. Up to 5521 conditions per place. [2023-11-28 23:56:08,658 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 128 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2023-11-28 23:56:08,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 176 transitions, 1202 flow [2023-11-28 23:56:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:56:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:56:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-28 23:56:08,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.735202492211838 [2023-11-28 23:56:08,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-28 23:56:08,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-28 23:56:08,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:08,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-28 23:56:08,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:08,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:08,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:08,660 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 873 flow. Second operand 3 states and 236 transitions. [2023-11-28 23:56:08,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 176 transitions, 1202 flow [2023-11-28 23:56:08,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 176 transitions, 1196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:56:08,673 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 891 flow [2023-11-28 23:56:08,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=891, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2023-11-28 23:56:08,674 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 58 predicate places. [2023-11-28 23:56:08,674 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 891 flow [2023-11-28 23:56:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:08,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:08,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:08,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 23:56:08,675 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:08,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash -264885919, now seen corresponding path program 1 times [2023-11-28 23:56:08,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:08,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041317703] [2023-11-28 23:56:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:08,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:08,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:08,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041317703] [2023-11-28 23:56:08,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041317703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:08,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080087314] [2023-11-28 23:56:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:08,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:08,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:08,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:08,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:56:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:08,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:56:08,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:09,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080087314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:09,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:09,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-28 23:56:09,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875278989] [2023-11-28 23:56:09,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:09,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:56:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:56:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:56:09,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 107 [2023-11-28 23:56:09,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 891 flow. Second operand has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:09,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:09,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 107 [2023-11-28 23:56:09,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:10,637 INFO L124 PetriNetUnfolderBase]: 4099/7044 cut-off events. [2023-11-28 23:56:10,637 INFO L125 PetriNetUnfolderBase]: For 3047/3416 co-relation queries the response was YES. [2023-11-28 23:56:10,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16020 conditions, 7044 events. 4099/7044 cut-off events. For 3047/3416 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 44294 event pairs, 2906 based on Foata normal form. 82/5610 useless extension candidates. Maximal degree in co-relation 15964. Up to 4776 conditions per place. [2023-11-28 23:56:10,674 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 118 selfloop transitions, 53 changer transitions 0/213 dead transitions. [2023-11-28 23:56:10,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 213 transitions, 1460 flow [2023-11-28 23:56:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:56:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 23:56:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 646 transitions. [2023-11-28 23:56:10,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488530161427357 [2023-11-28 23:56:10,677 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 646 transitions. [2023-11-28 23:56:10,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 646 transitions. [2023-11-28 23:56:10,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:10,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 646 transitions. [2023-11-28 23:56:10,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.72727272727273) internal successors, (646), 11 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:10,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:10,680 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:10,680 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 891 flow. Second operand 11 states and 646 transitions. [2023-11-28 23:56:10,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 213 transitions, 1460 flow [2023-11-28 23:56:10,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 213 transitions, 1455 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:56:10,687 INFO L231 Difference]: Finished difference. Result has 171 places, 157 transitions, 1014 flow [2023-11-28 23:56:10,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1014, PETRI_PLACES=171, PETRI_TRANSITIONS=157} [2023-11-28 23:56:10,688 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 69 predicate places. [2023-11-28 23:56:10,688 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 157 transitions, 1014 flow [2023-11-28 23:56:10,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:10,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:10,689 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2023-11-28 23:56:10,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:56:10,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:56:10,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:10,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:10,890 INFO L85 PathProgramCache]: Analyzing trace with hash 512237857, now seen corresponding path program 2 times [2023-11-28 23:56:10,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:10,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598436258] [2023-11-28 23:56:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:10,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:56:11,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:11,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598436258] [2023-11-28 23:56:11,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598436258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:11,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564654650] [2023-11-28 23:56:11,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:56:11,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:11,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:11,301 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:11,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:56:11,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:56:11,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:11,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:56:11,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:56:11,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 23:56:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564654650] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:11,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:11,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2023-11-28 23:56:11,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769905507] [2023-11-28 23:56:11,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:11,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 23:56:11,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:11,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 23:56:11,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-28 23:56:11,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:56:11,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 157 transitions, 1014 flow. Second operand has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:11,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:11,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:56:11,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:13,121 INFO L124 PetriNetUnfolderBase]: 3726/6573 cut-off events. [2023-11-28 23:56:13,121 INFO L125 PetriNetUnfolderBase]: For 3672/4036 co-relation queries the response was YES. [2023-11-28 23:56:13,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15746 conditions, 6573 events. 3726/6573 cut-off events. For 3672/4036 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43134 event pairs, 3011 based on Foata normal form. 4/5299 useless extension candidates. Maximal degree in co-relation 15688. Up to 5283 conditions per place. [2023-11-28 23:56:13,160 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 54 selfloop transitions, 70 changer transitions 0/167 dead transitions. [2023-11-28 23:56:13,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 167 transitions, 1373 flow [2023-11-28 23:56:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:56:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 23:56:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1026 transitions. [2023-11-28 23:56:13,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046728971962616 [2023-11-28 23:56:13,162 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1026 transitions. [2023-11-28 23:56:13,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1026 transitions. [2023-11-28 23:56:13,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:13,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1026 transitions. [2023-11-28 23:56:13,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 54.0) internal successors, (1026), 19 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:13,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 107.0) internal successors, (2140), 20 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:13,166 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 107.0) internal successors, (2140), 20 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:13,166 INFO L175 Difference]: Start difference. First operand has 171 places, 157 transitions, 1014 flow. Second operand 19 states and 1026 transitions. [2023-11-28 23:56:13,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 167 transitions, 1373 flow [2023-11-28 23:56:13,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 167 transitions, 1216 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-28 23:56:13,175 INFO L231 Difference]: Finished difference. Result has 175 places, 167 transitions, 1108 flow [2023-11-28 23:56:13,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1108, PETRI_PLACES=175, PETRI_TRANSITIONS=167} [2023-11-28 23:56:13,175 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 73 predicate places. [2023-11-28 23:56:13,175 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 167 transitions, 1108 flow [2023-11-28 23:56:13,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:13,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:13,176 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:13,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:56:13,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:56:13,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:13,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash -974248754, now seen corresponding path program 1 times [2023-11-28 23:56:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:13,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881517572] [2023-11-28 23:56:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:13,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881517572] [2023-11-28 23:56:13,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881517572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279044215] [2023-11-28 23:56:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:13,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:13,500 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:13,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:56:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:13,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:56:13,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:13,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:13,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279044215] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:13,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:13,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-28 23:56:13,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404406156] [2023-11-28 23:56:13,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:13,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:56:13,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:56:13,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:56:14,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:56:14,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 167 transitions, 1108 flow. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:14,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:14,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:56:14,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:15,464 INFO L124 PetriNetUnfolderBase]: 3440/6197 cut-off events. [2023-11-28 23:56:15,465 INFO L125 PetriNetUnfolderBase]: For 3170/3269 co-relation queries the response was YES. [2023-11-28 23:56:15,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14244 conditions, 6197 events. 3440/6197 cut-off events. For 3170/3269 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 43315 event pairs, 2517 based on Foata normal form. 38/4891 useless extension candidates. Maximal degree in co-relation 14190. Up to 4292 conditions per place. [2023-11-28 23:56:15,498 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 108 selfloop transitions, 62 changer transitions 0/213 dead transitions. [2023-11-28 23:56:15,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 213 transitions, 1629 flow [2023-11-28 23:56:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:56:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 23:56:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 650 transitions. [2023-11-28 23:56:15,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522514868309261 [2023-11-28 23:56:15,500 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 650 transitions. [2023-11-28 23:56:15,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 650 transitions. [2023-11-28 23:56:15,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:15,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 650 transitions. [2023-11-28 23:56:15,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.09090909090909) internal successors, (650), 11 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:15,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:15,503 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:15,503 INFO L175 Difference]: Start difference. First operand has 175 places, 167 transitions, 1108 flow. Second operand 11 states and 650 transitions. [2023-11-28 23:56:15,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 213 transitions, 1629 flow [2023-11-28 23:56:15,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 213 transitions, 1431 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-28 23:56:15,518 INFO L231 Difference]: Finished difference. Result has 175 places, 169 transitions, 1055 flow [2023-11-28 23:56:15,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1055, PETRI_PLACES=175, PETRI_TRANSITIONS=169} [2023-11-28 23:56:15,519 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 73 predicate places. [2023-11-28 23:56:15,519 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 169 transitions, 1055 flow [2023-11-28 23:56:15,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:15,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:15,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:15,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:56:15,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:56:15,720 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:15,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:15,721 INFO L85 PathProgramCache]: Analyzing trace with hash 752959078, now seen corresponding path program 1 times [2023-11-28 23:56:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:15,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602687918] [2023-11-28 23:56:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:15,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:15,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:15,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602687918] [2023-11-28 23:56:15,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602687918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:15,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:15,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:56:15,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417045426] [2023-11-28 23:56:15,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:15,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:56:15,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:15,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:56:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:15,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2023-11-28 23:56:15,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 169 transitions, 1055 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:15,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:15,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2023-11-28 23:56:15,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:17,427 INFO L124 PetriNetUnfolderBase]: 7765/13609 cut-off events. [2023-11-28 23:56:17,427 INFO L125 PetriNetUnfolderBase]: For 9678/10094 co-relation queries the response was YES. [2023-11-28 23:56:17,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31986 conditions, 13609 events. 7765/13609 cut-off events. For 9678/10094 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 102241 event pairs, 3943 based on Foata normal form. 252/11205 useless extension candidates. Maximal degree in co-relation 31901. Up to 7032 conditions per place. [2023-11-28 23:56:17,516 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 195 selfloop transitions, 3 changer transitions 0/238 dead transitions. [2023-11-28 23:56:17,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 238 transitions, 1744 flow [2023-11-28 23:56:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:56:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-11-28 23:56:17,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7242990654205608 [2023-11-28 23:56:17,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-11-28 23:56:17,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-11-28 23:56:17,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:17,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-11-28 23:56:17,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,519 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,519 INFO L175 Difference]: Start difference. First operand has 175 places, 169 transitions, 1055 flow. Second operand 4 states and 310 transitions. [2023-11-28 23:56:17,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 238 transitions, 1744 flow [2023-11-28 23:56:17,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 238 transitions, 1627 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-28 23:56:17,532 INFO L231 Difference]: Finished difference. Result has 172 places, 171 transitions, 960 flow [2023-11-28 23:56:17,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=960, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2023-11-28 23:56:17,533 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 70 predicate places. [2023-11-28 23:56:17,533 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 960 flow [2023-11-28 23:56:17,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:17,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:17,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 23:56:17,533 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:17,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733474, now seen corresponding path program 1 times [2023-11-28 23:56:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095852149] [2023-11-28 23:56:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095852149] [2023-11-28 23:56:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095852149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979264648] [2023-11-28 23:56:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:18,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:18,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:18,352 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:18,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:56:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:18,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 23:56:18,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:18,495 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 [2023-11-28 23:56:18,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-28 23:56:18,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,516 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 [2023-11-28 23:56:18,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,522 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 [2023-11-28 23:56:18,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,530 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 [2023-11-28 23:56:18,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,534 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 [2023-11-28 23:56:18,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,543 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 [2023-11-28 23:56:18,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,548 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 [2023-11-28 23:56:18,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,553 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 [2023-11-28 23:56:18,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,559 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 [2023-11-28 23:56:18,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,565 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 [2023-11-28 23:56:18,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,569 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 [2023-11-28 23:56:18,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,576 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 [2023-11-28 23:56:18,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,584 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 [2023-11-28 23:56:18,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,589 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 [2023-11-28 23:56:18,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,593 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 [2023-11-28 23:56:18,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,599 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 [2023-11-28 23:56:18,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,603 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 [2023-11-28 23:56:18,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,609 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 [2023-11-28 23:56:18,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,613 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 [2023-11-28 23:56:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,617 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 [2023-11-28 23:56:18,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,622 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 [2023-11-28 23:56:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,630 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 [2023-11-28 23:56:18,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:18,635 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 [2023-11-28 23:56:18,710 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 [2023-11-28 23:56:18,765 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-28 23:56:18,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-28 23:56:18,798 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 [2023-11-28 23:56:18,831 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 [2023-11-28 23:56:18,885 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:56:18,885 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 [2023-11-28 23:56:18,897 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 [2023-11-28 23:56:18,923 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 [2023-11-28 23:56:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:18,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:19,067 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_636) c_~A~0.base) (+ c_~A~0.offset 4))))) is different from false [2023-11-28 23:56:19,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:19,291 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 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-28 23:56:19,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:19,304 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 159 treesize of output 147 [2023-11-28 23:56:19,314 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 29 treesize of output 25 [2023-11-28 23:56:19,322 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 32 treesize of output 24 [2023-11-28 23:56:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2023-11-28 23:56:19,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979264648] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:19,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:19,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-28 23:56:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477768836] [2023-11-28 23:56:19,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:19,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:56:19,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:56:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=514, Unknown=1, NotChecked=46, Total=650 [2023-11-28 23:56:19,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-28 23:56:19,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 960 flow. Second operand has 26 states, 26 states have (on average 46.96153846153846) internal successors, (1221), 26 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:19,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:19,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-28 23:56:19,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:22,008 INFO L124 PetriNetUnfolderBase]: 6200/10291 cut-off events. [2023-11-28 23:56:22,008 INFO L125 PetriNetUnfolderBase]: For 9367/10580 co-relation queries the response was YES. [2023-11-28 23:56:22,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27236 conditions, 10291 events. 6200/10291 cut-off events. For 9367/10580 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 69161 event pairs, 2980 based on Foata normal form. 263/8972 useless extension candidates. Maximal degree in co-relation 27154. Up to 4856 conditions per place. [2023-11-28 23:56:22,081 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 168 selfloop transitions, 55 changer transitions 0/262 dead transitions. [2023-11-28 23:56:22,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 262 transitions, 1797 flow [2023-11-28 23:56:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:56:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 23:56:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 807 transitions. [2023-11-28 23:56:22,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502803738317757 [2023-11-28 23:56:22,082 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 807 transitions. [2023-11-28 23:56:22,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 807 transitions. [2023-11-28 23:56:22,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:22,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 807 transitions. [2023-11-28 23:56:22,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.8) internal successors, (807), 15 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:22,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:22,086 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:22,086 INFO L175 Difference]: Start difference. First operand has 172 places, 171 transitions, 960 flow. Second operand 15 states and 807 transitions. [2023-11-28 23:56:22,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 262 transitions, 1797 flow [2023-11-28 23:56:22,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 262 transitions, 1789 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:56:22,102 INFO L231 Difference]: Finished difference. Result has 187 places, 177 transitions, 1147 flow [2023-11-28 23:56:22,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1147, PETRI_PLACES=187, PETRI_TRANSITIONS=177} [2023-11-28 23:56:22,103 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 85 predicate places. [2023-11-28 23:56:22,103 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 177 transitions, 1147 flow [2023-11-28 23:56:22,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.96153846153846) internal successors, (1221), 26 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:22,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:22,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:22,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:56:22,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-28 23:56:22,304 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:22,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733473, now seen corresponding path program 1 times [2023-11-28 23:56:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314893581] [2023-11-28 23:56:22,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:22,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:23,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:23,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314893581] [2023-11-28 23:56:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314893581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:23,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133872783] [2023-11-28 23:56:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:23,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:23,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:23,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:56:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:23,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-28 23:56:23,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:23,225 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 [2023-11-28 23:56:23,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,235 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 [2023-11-28 23:56:23,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,241 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 [2023-11-28 23:56:23,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,245 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 [2023-11-28 23:56:23,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,250 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 [2023-11-28 23:56:23,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,255 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 [2023-11-28 23:56:23,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,261 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 [2023-11-28 23:56:23,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,266 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 [2023-11-28 23:56:23,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,272 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 [2023-11-28 23:56:23,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,277 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 [2023-11-28 23:56:23,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,283 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 [2023-11-28 23:56:23,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,291 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 [2023-11-28 23:56:23,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,299 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 [2023-11-28 23:56:23,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,303 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 [2023-11-28 23:56:23,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,311 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 [2023-11-28 23:56:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,319 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 [2023-11-28 23:56:23,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,325 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 [2023-11-28 23:56:23,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,330 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 [2023-11-28 23:56:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,340 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 [2023-11-28 23:56:23,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,348 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 [2023-11-28 23:56:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-28 23:56:23,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,368 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 [2023-11-28 23:56:23,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,376 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 [2023-11-28 23:56:23,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:56:23,382 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 [2023-11-28 23:56:23,406 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 [2023-11-28 23:56:23,442 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-28 23:56:23,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-28 23:56:23,462 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 [2023-11-28 23:56:23,489 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 [2023-11-28 23:56:23,523 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:56:23,524 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 [2023-11-28 23:56:23,535 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 [2023-11-28 23:56:23,559 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 [2023-11-28 23:56:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:56:23,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:23,688 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_703 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_703) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-11-28 23:56:23,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:23,886 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 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-28 23:56:23,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:23,896 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 71 treesize of output 65 [2023-11-28 23:56:23,905 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 28 treesize of output 24 [2023-11-28 23:56:23,911 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 50 treesize of output 42 [2023-11-28 23:56:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2023-11-28 23:56:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133872783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:24,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2023-11-28 23:56:24,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923649013] [2023-11-28 23:56:24,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:24,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:56:24,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:56:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=288, Unknown=2, NotChecked=34, Total=380 [2023-11-28 23:56:24,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-28 23:56:24,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 177 transitions, 1147 flow. Second operand has 20 states, 20 states have (on average 47.15) internal successors, (943), 20 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:24,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:24,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-28 23:56:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:27,159 INFO L124 PetriNetUnfolderBase]: 5938/9989 cut-off events. [2023-11-28 23:56:27,159 INFO L125 PetriNetUnfolderBase]: For 11716/12719 co-relation queries the response was YES. [2023-11-28 23:56:27,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27422 conditions, 9989 events. 5938/9989 cut-off events. For 11716/12719 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 66941 event pairs, 2814 based on Foata normal form. 328/8824 useless extension candidates. Maximal degree in co-relation 27336. Up to 4856 conditions per place. [2023-11-28 23:56:27,246 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 167 selfloop transitions, 55 changer transitions 0/261 dead transitions. [2023-11-28 23:56:27,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 261 transitions, 1920 flow [2023-11-28 23:56:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:56:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 23:56:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 806 transitions. [2023-11-28 23:56:27,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021806853582554 [2023-11-28 23:56:27,248 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 806 transitions. [2023-11-28 23:56:27,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 806 transitions. [2023-11-28 23:56:27,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:27,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 806 transitions. [2023-11-28 23:56:27,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.733333333333334) internal successors, (806), 15 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,253 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,253 INFO L175 Difference]: Start difference. First operand has 187 places, 177 transitions, 1147 flow. Second operand 15 states and 806 transitions. [2023-11-28 23:56:27,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 261 transitions, 1920 flow [2023-11-28 23:56:27,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 261 transitions, 1820 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-28 23:56:27,273 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 1153 flow [2023-11-28 23:56:27,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1153, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2023-11-28 23:56:27,274 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 90 predicate places. [2023-11-28 23:56:27,274 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 1153 flow [2023-11-28 23:56:27,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 47.15) internal successors, (943), 20 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:27,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:27,275 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:27,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:56:27,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-28 23:56:27,475 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:27,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733477, now seen corresponding path program 2 times [2023-11-28 23:56:27,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:27,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101264027] [2023-11-28 23:56:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:27,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:56:28,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:28,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101264027] [2023-11-28 23:56:28,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101264027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:28,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163516845] [2023-11-28 23:56:28,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:56:28,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:28,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:28,280 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:28,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:56:28,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:56:28,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:28,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-28 23:56:28,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:28,505 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 [2023-11-28 23:56:28,590 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 [2023-11-28 23:56:28,616 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:56:28,616 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 [2023-11-28 23:56:28,623 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 18 treesize of output 13 [2023-11-28 23:56:28,644 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 [2023-11-28 23:56:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:28,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:28,781 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_764 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_764) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-11-28 23:56:28,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:28,849 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 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-28 23:56:28,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:28,859 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 [2023-11-28 23:56:28,865 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 [2023-11-28 23:56:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2023-11-28 23:56:29,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163516845] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:29,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:29,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 8] total 25 [2023-11-28 23:56:29,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659327261] [2023-11-28 23:56:29,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:29,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:56:29,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:29,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:56:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=529, Unknown=1, NotChecked=46, Total=650 [2023-11-28 23:56:29,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-28 23:56:29,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 176 transitions, 1153 flow. Second operand has 26 states, 26 states have (on average 45.61538461538461) internal successors, (1186), 26 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:29,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:29,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-28 23:56:29,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:31,873 INFO L124 PetriNetUnfolderBase]: 7615/13114 cut-off events. [2023-11-28 23:56:31,873 INFO L125 PetriNetUnfolderBase]: For 18717/19738 co-relation queries the response was YES. [2023-11-28 23:56:31,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36514 conditions, 13114 events. 7615/13114 cut-off events. For 18717/19738 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 91822 event pairs, 2430 based on Foata normal form. 186/11122 useless extension candidates. Maximal degree in co-relation 36427. Up to 3416 conditions per place. [2023-11-28 23:56:31,977 INFO L140 encePairwiseOnDemand]: 87/107 looper letters, 167 selfloop transitions, 64 changer transitions 0/269 dead transitions. [2023-11-28 23:56:31,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 269 transitions, 1986 flow [2023-11-28 23:56:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:56:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:56:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1066 transitions. [2023-11-28 23:56:31,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744103248776146 [2023-11-28 23:56:31,979 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1066 transitions. [2023-11-28 23:56:31,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1066 transitions. [2023-11-28 23:56:31,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:31,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1066 transitions. [2023-11-28 23:56:31,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 50.76190476190476) internal successors, (1066), 21 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:31,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 107.0) internal successors, (2354), 22 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:31,983 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 107.0) internal successors, (2354), 22 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:31,983 INFO L175 Difference]: Start difference. First operand has 192 places, 176 transitions, 1153 flow. Second operand 21 states and 1066 transitions. [2023-11-28 23:56:31,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 269 transitions, 1986 flow [2023-11-28 23:56:32,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 269 transitions, 1887 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-28 23:56:32,006 INFO L231 Difference]: Finished difference. Result has 202 places, 180 transitions, 1246 flow [2023-11-28 23:56:32,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1246, PETRI_PLACES=202, PETRI_TRANSITIONS=180} [2023-11-28 23:56:32,007 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 100 predicate places. [2023-11-28 23:56:32,007 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 180 transitions, 1246 flow [2023-11-28 23:56:32,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 45.61538461538461) internal successors, (1186), 26 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:32,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:32,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:32,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-28 23:56:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:32,208 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:32,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733476, now seen corresponding path program 1 times [2023-11-28 23:56:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353575482] [2023-11-28 23:56:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:56:32,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353575482] [2023-11-28 23:56:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353575482] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868898214] [2023-11-28 23:56:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:32,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:32,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:32,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:32,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:56:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:32,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-28 23:56:32,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:32,913 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 [2023-11-28 23:56:32,942 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 [2023-11-28 23:56:32,965 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:56:32,965 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 [2023-11-28 23:56:32,973 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 [2023-11-28 23:56:32,992 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 [2023-11-28 23:56:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:56:33,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:33,125 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_825 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_825) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-11-28 23:56:33,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:33,173 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 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-28 23:56:33,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:56:33,180 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 [2023-11-28 23:56:33,184 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 [2023-11-28 23:56:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2023-11-28 23:56:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868898214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:33,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:33,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 18 [2023-11-28 23:56:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184268252] [2023-11-28 23:56:33,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:33,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:56:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:56:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=260, Unknown=1, NotChecked=32, Total=342 [2023-11-28 23:56:33,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-28 23:56:33,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 180 transitions, 1246 flow. Second operand has 19 states, 19 states have (on average 47.10526315789474) internal successors, (895), 19 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:33,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:33,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-28 23:56:33,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:35,444 INFO L124 PetriNetUnfolderBase]: 5695/9592 cut-off events. [2023-11-28 23:56:35,444 INFO L125 PetriNetUnfolderBase]: For 17599/18586 co-relation queries the response was YES. [2023-11-28 23:56:35,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30180 conditions, 9592 events. 5695/9592 cut-off events. For 17599/18586 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 64551 event pairs, 1906 based on Foata normal form. 233/8805 useless extension candidates. Maximal degree in co-relation 30090. Up to 2527 conditions per place. [2023-11-28 23:56:35,515 INFO L140 encePairwiseOnDemand]: 87/107 looper letters, 177 selfloop transitions, 61 changer transitions 0/277 dead transitions. [2023-11-28 23:56:35,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 277 transitions, 2107 flow [2023-11-28 23:56:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:56:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-28 23:56:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 857 transitions. [2023-11-28 23:56:35,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005841121495327 [2023-11-28 23:56:35,517 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 857 transitions. [2023-11-28 23:56:35,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 857 transitions. [2023-11-28 23:56:35,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:35,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 857 transitions. [2023-11-28 23:56:35,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 53.5625) internal successors, (857), 16 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:35,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:35,521 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:35,521 INFO L175 Difference]: Start difference. First operand has 202 places, 180 transitions, 1246 flow. Second operand 16 states and 857 transitions. [2023-11-28 23:56:35,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 277 transitions, 2107 flow [2023-11-28 23:56:35,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 277 transitions, 2086 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 23:56:35,542 INFO L231 Difference]: Finished difference. Result has 214 places, 179 transitions, 1343 flow [2023-11-28 23:56:35,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1343, PETRI_PLACES=214, PETRI_TRANSITIONS=179} [2023-11-28 23:56:35,542 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 112 predicate places. [2023-11-28 23:56:35,542 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 179 transitions, 1343 flow [2023-11-28 23:56:35,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 47.10526315789474) internal successors, (895), 19 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:35,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:35,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:35,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:56:35,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:35,743 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:35,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:35,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2115882796, now seen corresponding path program 2 times [2023-11-28 23:56:35,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:35,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176081273] [2023-11-28 23:56:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:35,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:35,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176081273] [2023-11-28 23:56:35,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176081273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29070906] [2023-11-28 23:56:35,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:56:35,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:35,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:35,821 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:35,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:56:36,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:56:36,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:56:36,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:56:36,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:36,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:56:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29070906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:36,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:56:36,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-28 23:56:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301759473] [2023-11-28 23:56:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:56:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:56:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:56:36,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2023-11-28 23:56:36,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 179 transitions, 1343 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:36,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:36,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2023-11-28 23:56:36,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:37,402 INFO L124 PetriNetUnfolderBase]: 6017/9805 cut-off events. [2023-11-28 23:56:37,402 INFO L125 PetriNetUnfolderBase]: For 25891/26748 co-relation queries the response was YES. [2023-11-28 23:56:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33704 conditions, 9805 events. 6017/9805 cut-off events. For 25891/26748 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 65502 event pairs, 1816 based on Foata normal form. 456/9296 useless extension candidates. Maximal degree in co-relation 33617. Up to 3400 conditions per place. [2023-11-28 23:56:37,485 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 180 selfloop transitions, 9 changer transitions 0/230 dead transitions. [2023-11-28 23:56:37,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 230 transitions, 2087 flow [2023-11-28 23:56:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:56:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2023-11-28 23:56:37,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962616822429907 [2023-11-28 23:56:37,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 298 transitions. [2023-11-28 23:56:37,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 298 transitions. [2023-11-28 23:56:37,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:37,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 298 transitions. [2023-11-28 23:56:37,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:37,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:37,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:37,487 INFO L175 Difference]: Start difference. First operand has 214 places, 179 transitions, 1343 flow. Second operand 4 states and 298 transitions. [2023-11-28 23:56:37,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 230 transitions, 2087 flow [2023-11-28 23:56:37,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 230 transitions, 1956 flow, removed 3 selfloop flow, removed 13 redundant places. [2023-11-28 23:56:37,521 INFO L231 Difference]: Finished difference. Result has 203 places, 178 transitions, 1252 flow [2023-11-28 23:56:37,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1252, PETRI_PLACES=203, PETRI_TRANSITIONS=178} [2023-11-28 23:56:37,522 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 101 predicate places. [2023-11-28 23:56:37,522 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 178 transitions, 1252 flow [2023-11-28 23:56:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:37,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:37,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:37,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:56:37,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:37,723 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:37,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2111795331, now seen corresponding path program 1 times [2023-11-28 23:56:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050404492] [2023-11-28 23:56:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:37,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:37,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050404492] [2023-11-28 23:56:37,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050404492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:37,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:37,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:56:37,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567864626] [2023-11-28 23:56:37,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:37,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:56:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:56:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:56:37,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2023-11-28 23:56:37,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 178 transitions, 1252 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:37,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:37,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2023-11-28 23:56:37,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:39,008 INFO L124 PetriNetUnfolderBase]: 5675/9383 cut-off events. [2023-11-28 23:56:39,008 INFO L125 PetriNetUnfolderBase]: For 25459/26230 co-relation queries the response was YES. [2023-11-28 23:56:39,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32215 conditions, 9383 events. 5675/9383 cut-off events. For 25459/26230 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 62196 event pairs, 3520 based on Foata normal form. 463/9228 useless extension candidates. Maximal degree in co-relation 32129. Up to 6472 conditions per place. [2023-11-28 23:56:39,084 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 165 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2023-11-28 23:56:39,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 215 transitions, 1780 flow [2023-11-28 23:56:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:56:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:56:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2023-11-28 23:56:39,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2023-11-28 23:56:39,086 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2023-11-28 23:56:39,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2023-11-28 23:56:39,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:39,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2023-11-28 23:56:39,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-28 23:56:39,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:39,087 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:39,087 INFO L175 Difference]: Start difference. First operand has 203 places, 178 transitions, 1252 flow. Second operand 4 states and 292 transitions. [2023-11-28 23:56:39,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 215 transitions, 1780 flow [2023-11-28 23:56:39,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 215 transitions, 1730 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:56:39,117 INFO L231 Difference]: Finished difference. Result has 205 places, 179 transitions, 1273 flow [2023-11-28 23:56:39,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1273, PETRI_PLACES=205, PETRI_TRANSITIONS=179} [2023-11-28 23:56:39,118 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 103 predicate places. [2023-11-28 23:56:39,118 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 179 transitions, 1273 flow [2023-11-28 23:56:39,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:39,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:39,119 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-28 23:56:39,119 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:39,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1167856096, now seen corresponding path program 1 times [2023-11-28 23:56:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:39,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529526277] [2023-11-28 23:56:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:39,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:39,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529526277] [2023-11-28 23:56:39,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529526277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:39,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146990893] [2023-11-28 23:56:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:39,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:39,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:39,200 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:39,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:56:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:39,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:56:39,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:39,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:56:39,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146990893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:39,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:39,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-28 23:56:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538377024] [2023-11-28 23:56:39,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:56:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:56:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:56:39,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 107 [2023-11-28 23:56:39,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 179 transitions, 1273 flow. Second operand has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:39,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:39,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 107 [2023-11-28 23:56:39,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:41,569 INFO L124 PetriNetUnfolderBase]: 8543/13841 cut-off events. [2023-11-28 23:56:41,569 INFO L125 PetriNetUnfolderBase]: For 40249/41443 co-relation queries the response was YES. [2023-11-28 23:56:41,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46316 conditions, 13841 events. 8543/13841 cut-off events. For 40249/41443 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 96694 event pairs, 2930 based on Foata normal form. 358/12714 useless extension candidates. Maximal degree in co-relation 46228. Up to 6100 conditions per place. [2023-11-28 23:56:41,692 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 320 selfloop transitions, 15 changer transitions 0/378 dead transitions. [2023-11-28 23:56:41,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 378 transitions, 3205 flow [2023-11-28 23:56:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:56:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:56:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2023-11-28 23:56:41,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981308411214954 [2023-11-28 23:56:41,694 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 747 transitions. [2023-11-28 23:56:41,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 747 transitions. [2023-11-28 23:56:41,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:41,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 747 transitions. [2023-11-28 23:56:41,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:41,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:41,696 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:41,696 INFO L175 Difference]: Start difference. First operand has 205 places, 179 transitions, 1273 flow. Second operand 10 states and 747 transitions. [2023-11-28 23:56:41,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 378 transitions, 3205 flow [2023-11-28 23:56:41,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 378 transitions, 3166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:56:41,733 INFO L231 Difference]: Finished difference. Result has 216 places, 188 transitions, 1348 flow [2023-11-28 23:56:41,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1348, PETRI_PLACES=216, PETRI_TRANSITIONS=188} [2023-11-28 23:56:41,734 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 114 predicate places. [2023-11-28 23:56:41,734 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 188 transitions, 1348 flow [2023-11-28 23:56:41,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:41,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:41,734 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:41,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:56:41,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-28 23:56:41,935 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:41,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:41,935 INFO L85 PathProgramCache]: Analyzing trace with hash -185097559, now seen corresponding path program 1 times [2023-11-28 23:56:41,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:41,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653210293] [2023-11-28 23:56:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:41,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:56:42,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653210293] [2023-11-28 23:56:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653210293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811985092] [2023-11-28 23:56:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:42,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:42,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:42,159 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:42,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:56:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:42,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:56:42,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:56:42,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:56:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811985092] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:42,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2023-11-28 23:56:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084562898] [2023-11-28 23:56:42,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:42,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:56:42,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:56:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:56:42,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2023-11-28 23:56:42,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 188 transitions, 1348 flow. Second operand has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:42,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:42,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2023-11-28 23:56:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:46,450 INFO L124 PetriNetUnfolderBase]: 15461/24053 cut-off events. [2023-11-28 23:56:46,450 INFO L125 PetriNetUnfolderBase]: For 73197/74968 co-relation queries the response was YES. [2023-11-28 23:56:46,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86022 conditions, 24053 events. 15461/24053 cut-off events. For 73197/74968 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 162236 event pairs, 9329 based on Foata normal form. 795/23667 useless extension candidates. Maximal degree in co-relation 85931. Up to 14123 conditions per place. [2023-11-28 23:56:46,696 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 208 selfloop transitions, 78 changer transitions 0/325 dead transitions. [2023-11-28 23:56:46,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 325 transitions, 2676 flow [2023-11-28 23:56:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:56:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-28 23:56:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 930 transitions. [2023-11-28 23:56:46,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112699285321606 [2023-11-28 23:56:46,698 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 930 transitions. [2023-11-28 23:56:46,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 930 transitions. [2023-11-28 23:56:46,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:46,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 930 transitions. [2023-11-28 23:56:46,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.705882352941174) internal successors, (930), 17 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:46,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:46,701 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:46,702 INFO L175 Difference]: Start difference. First operand has 216 places, 188 transitions, 1348 flow. Second operand 17 states and 930 transitions. [2023-11-28 23:56:46,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 325 transitions, 2676 flow [2023-11-28 23:56:46,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 325 transitions, 2518 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-11-28 23:56:46,796 INFO L231 Difference]: Finished difference. Result has 233 places, 193 transitions, 1569 flow [2023-11-28 23:56:46,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1569, PETRI_PLACES=233, PETRI_TRANSITIONS=193} [2023-11-28 23:56:46,796 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 131 predicate places. [2023-11-28 23:56:46,796 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 193 transitions, 1569 flow [2023-11-28 23:56:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:46,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:46,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:46,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:56:46,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-28 23:56:46,997 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:46,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:46,998 INFO L85 PathProgramCache]: Analyzing trace with hash -592618297, now seen corresponding path program 1 times [2023-11-28 23:56:46,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:46,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58404914] [2023-11-28 23:56:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:46,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:56:47,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58404914] [2023-11-28 23:56:47,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58404914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:56:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212837646] [2023-11-28 23:56:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:47,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:56:47,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:56:47,104 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:56:47,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:56:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:47,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:56:47,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:56:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:56:47,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:56:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:56:47,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212837646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:56:47,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:56:47,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-28 23:56:47,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896394020] [2023-11-28 23:56:47,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:56:47,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:56:47,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:47,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:56:47,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:56:47,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 107 [2023-11-28 23:56:47,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 193 transitions, 1569 flow. Second operand has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:47,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:47,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 107 [2023-11-28 23:56:47,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:50,536 INFO L124 PetriNetUnfolderBase]: 12940/21407 cut-off events. [2023-11-28 23:56:50,536 INFO L125 PetriNetUnfolderBase]: For 88654/90217 co-relation queries the response was YES. [2023-11-28 23:56:50,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76177 conditions, 21407 events. 12940/21407 cut-off events. For 88654/90217 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 151743 event pairs, 7520 based on Foata normal form. 562/20080 useless extension candidates. Maximal degree in co-relation 76073. Up to 13441 conditions per place. [2023-11-28 23:56:50,951 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 166 selfloop transitions, 65 changer transitions 0/275 dead transitions. [2023-11-28 23:56:50,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 275 transitions, 2589 flow [2023-11-28 23:56:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:56:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 23:56:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 703 transitions. [2023-11-28 23:56:50,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475077881619937 [2023-11-28 23:56:50,952 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 703 transitions. [2023-11-28 23:56:50,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 703 transitions. [2023-11-28 23:56:50,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:50,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 703 transitions. [2023-11-28 23:56:50,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 58.583333333333336) internal successors, (703), 12 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:50,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:50,955 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:50,955 INFO L175 Difference]: Start difference. First operand has 233 places, 193 transitions, 1569 flow. Second operand 12 states and 703 transitions. [2023-11-28 23:56:50,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 275 transitions, 2589 flow [2023-11-28 23:56:51,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 275 transitions, 2453 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-28 23:56:51,028 INFO L231 Difference]: Finished difference. Result has 235 places, 195 transitions, 1625 flow [2023-11-28 23:56:51,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1625, PETRI_PLACES=235, PETRI_TRANSITIONS=195} [2023-11-28 23:56:51,029 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 133 predicate places. [2023-11-28 23:56:51,029 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 195 transitions, 1625 flow [2023-11-28 23:56:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:51,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:51,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:51,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:56:51,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-28 23:56:51,230 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:51,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1476751704, now seen corresponding path program 1 times [2023-11-28 23:56:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585863910] [2023-11-28 23:56:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:51,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585863910] [2023-11-28 23:56:51,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585863910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:51,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:56:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601237697] [2023-11-28 23:56:51,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:56:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:56:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:56:51,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2023-11-28 23:56:51,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 195 transitions, 1625 flow. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:51,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:51,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2023-11-28 23:56:51,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:56:57,135 INFO L124 PetriNetUnfolderBase]: 20796/35930 cut-off events. [2023-11-28 23:56:57,135 INFO L125 PetriNetUnfolderBase]: For 138463/141191 co-relation queries the response was YES. [2023-11-28 23:56:57,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130726 conditions, 35930 events. 20796/35930 cut-off events. For 138463/141191 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 294759 event pairs, 15580 based on Foata normal form. 1021/35150 useless extension candidates. Maximal degree in co-relation 130615. Up to 14199 conditions per place. [2023-11-28 23:56:57,666 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 200 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2023-11-28 23:56:57,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 258 transitions, 2535 flow [2023-11-28 23:56:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:56:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:56:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 317 transitions. [2023-11-28 23:56:57,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925233644859813 [2023-11-28 23:56:57,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 317 transitions. [2023-11-28 23:56:57,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 317 transitions. [2023-11-28 23:56:57,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:56:57,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 317 transitions. [2023-11-28 23:56:57,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.4) internal successors, (317), 5 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) [2023-11-28 23:56:57,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:57,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:57,669 INFO L175 Difference]: Start difference. First operand has 235 places, 195 transitions, 1625 flow. Second operand 5 states and 317 transitions. [2023-11-28 23:56:57,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 258 transitions, 2535 flow [2023-11-28 23:56:57,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 258 transitions, 2452 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-28 23:56:57,874 INFO L231 Difference]: Finished difference. Result has 233 places, 197 transitions, 1608 flow [2023-11-28 23:56:57,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1608, PETRI_PLACES=233, PETRI_TRANSITIONS=197} [2023-11-28 23:56:57,875 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 131 predicate places. [2023-11-28 23:56:57,875 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 197 transitions, 1608 flow [2023-11-28 23:56:57,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:57,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:56:57,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:56:57,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-28 23:56:57,876 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:56:57,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:56:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1234451583, now seen corresponding path program 1 times [2023-11-28 23:56:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:56:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90363323] [2023-11-28 23:56:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:56:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:56:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:56:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:56:58,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:56:58,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90363323] [2023-11-28 23:56:58,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90363323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:56:58,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:56:58,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:56:58,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003086790] [2023-11-28 23:56:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:56:58,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:56:58,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:56:58,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:56:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:56:58,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-28 23:56:58,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 197 transitions, 1608 flow. Second operand has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:56:58,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:56:58,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-28 23:56:58,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:04,733 INFO L124 PetriNetUnfolderBase]: 24729/42010 cut-off events. [2023-11-28 23:57:04,734 INFO L125 PetriNetUnfolderBase]: For 175641/179680 co-relation queries the response was YES. [2023-11-28 23:57:05,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154208 conditions, 42010 events. 24729/42010 cut-off events. For 175641/179680 co-relation queries the response was YES. Maximal size of possible extension queue 1266. Compared 352522 event pairs, 7143 based on Foata normal form. 1319/41612 useless extension candidates. Maximal degree in co-relation 154098. Up to 25889 conditions per place. [2023-11-28 23:57:05,189 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 189 selfloop transitions, 29 changer transitions 0/255 dead transitions. [2023-11-28 23:57:05,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 255 transitions, 2506 flow [2023-11-28 23:57:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:57:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:57:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 352 transitions. [2023-11-28 23:57:05,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482866043613707 [2023-11-28 23:57:05,190 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 352 transitions. [2023-11-28 23:57:05,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 352 transitions. [2023-11-28 23:57:05,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:05,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 352 transitions. [2023-11-28 23:57:05,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:05,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:05,192 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:05,192 INFO L175 Difference]: Start difference. First operand has 233 places, 197 transitions, 1608 flow. Second operand 6 states and 352 transitions. [2023-11-28 23:57:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 255 transitions, 2506 flow [2023-11-28 23:57:05,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 255 transitions, 2500 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:57:05,519 INFO L231 Difference]: Finished difference. Result has 241 places, 206 transitions, 1780 flow [2023-11-28 23:57:05,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1780, PETRI_PLACES=241, PETRI_TRANSITIONS=206} [2023-11-28 23:57:05,520 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 139 predicate places. [2023-11-28 23:57:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 206 transitions, 1780 flow [2023-11-28 23:57:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:05,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:05,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-28 23:57:05,521 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:57:05,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:05,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1528817836, now seen corresponding path program 1 times [2023-11-28 23:57:05,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:05,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157247776] [2023-11-28 23:57:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:05,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:57:05,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157247776] [2023-11-28 23:57:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157247776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:05,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:57:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:57:05,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302343850] [2023-11-28 23:57:05,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:05,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:57:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:57:05,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:57:05,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:57:05,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 206 transitions, 1780 flow. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:05,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:05,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:57:05,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:15,532 INFO L124 PetriNetUnfolderBase]: 33061/57332 cut-off events. [2023-11-28 23:57:15,532 INFO L125 PetriNetUnfolderBase]: For 227326/231827 co-relation queries the response was YES. [2023-11-28 23:57:16,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210642 conditions, 57332 events. 33061/57332 cut-off events. For 227326/231827 co-relation queries the response was YES. Maximal size of possible extension queue 1658. Compared 510693 event pairs, 25448 based on Foata normal form. 1691/56042 useless extension candidates. Maximal degree in co-relation 210525. Up to 29795 conditions per place. [2023-11-28 23:57:16,399 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 202 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2023-11-28 23:57:16,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 271 transitions, 2727 flow [2023-11-28 23:57:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:57:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:57:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 334 transitions. [2023-11-28 23:57:16,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242990654205608 [2023-11-28 23:57:16,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 334 transitions. [2023-11-28 23:57:16,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 334 transitions. [2023-11-28 23:57:16,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:16,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 334 transitions. [2023-11-28 23:57:16,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:16,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:16,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:16,402 INFO L175 Difference]: Start difference. First operand has 241 places, 206 transitions, 1780 flow. Second operand 5 states and 334 transitions. [2023-11-28 23:57:16,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 271 transitions, 2727 flow [2023-11-28 23:57:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 271 transitions, 2712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:57:16,919 INFO L231 Difference]: Finished difference. Result has 243 places, 209 transitions, 1854 flow [2023-11-28 23:57:16,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1854, PETRI_PLACES=243, PETRI_TRANSITIONS=209} [2023-11-28 23:57:16,920 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 141 predicate places. [2023-11-28 23:57:16,920 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 209 transitions, 1854 flow [2023-11-28 23:57:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:16,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:16,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:16,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-28 23:57:16,921 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:57:16,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash 386705555, now seen corresponding path program 1 times [2023-11-28 23:57:16,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:16,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491805065] [2023-11-28 23:57:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:16,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:57:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:17,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491805065] [2023-11-28 23:57:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491805065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:17,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:57:17,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:57:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682569312] [2023-11-28 23:57:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:57:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:57:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:57:17,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2023-11-28 23:57:17,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 209 transitions, 1854 flow. Second operand has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:17,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:17,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2023-11-28 23:57:17,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:27,103 INFO L124 PetriNetUnfolderBase]: 33054/57372 cut-off events. [2023-11-28 23:57:27,103 INFO L125 PetriNetUnfolderBase]: For 227619/232104 co-relation queries the response was YES. [2023-11-28 23:57:27,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211171 conditions, 57372 events. 33054/57372 cut-off events. For 227619/232104 co-relation queries the response was YES. Maximal size of possible extension queue 1658. Compared 511707 event pairs, 25448 based on Foata normal form. 1689/56056 useless extension candidates. Maximal degree in co-relation 211052. Up to 31266 conditions per place. [2023-11-28 23:57:27,897 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 207 selfloop transitions, 43 changer transitions 7/283 dead transitions. [2023-11-28 23:57:27,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 283 transitions, 2917 flow [2023-11-28 23:57:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 23:57:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 23:57:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 548 transitions. [2023-11-28 23:57:27,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393961179007908 [2023-11-28 23:57:27,900 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 548 transitions. [2023-11-28 23:57:27,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 548 transitions. [2023-11-28 23:57:27,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:27,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 548 transitions. [2023-11-28 23:57:27,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.15384615384615) internal successors, (548), 13 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:27,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 107.0) internal successors, (1498), 14 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:27,903 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 107.0) internal successors, (1498), 14 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:27,903 INFO L175 Difference]: Start difference. First operand has 243 places, 209 transitions, 1854 flow. Second operand 13 states and 548 transitions. [2023-11-28 23:57:27,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 283 transitions, 2917 flow [2023-11-28 23:57:28,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 283 transitions, 2917 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:57:28,431 INFO L231 Difference]: Finished difference. Result has 260 places, 215 transitions, 2032 flow [2023-11-28 23:57:28,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2032, PETRI_PLACES=260, PETRI_TRANSITIONS=215} [2023-11-28 23:57:28,431 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 158 predicate places. [2023-11-28 23:57:28,431 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 215 transitions, 2032 flow [2023-11-28 23:57:28,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:28,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:28,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:28,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-28 23:57:28,432 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:57:28,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:28,432 INFO L85 PathProgramCache]: Analyzing trace with hash -666012018, now seen corresponding path program 1 times [2023-11-28 23:57:28,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:28,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334171553] [2023-11-28 23:57:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:28,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:57:28,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:28,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334171553] [2023-11-28 23:57:28,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334171553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:28,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:57:28,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:57:28,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758782362] [2023-11-28 23:57:28,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:28,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:57:28,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:28,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:57:28,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:57:28,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2023-11-28 23:57:28,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 215 transitions, 2032 flow. Second operand has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:28,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:28,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2023-11-28 23:57:28,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:39,361 INFO L124 PetriNetUnfolderBase]: 33966/59103 cut-off events. [2023-11-28 23:57:39,361 INFO L125 PetriNetUnfolderBase]: For 236928/241607 co-relation queries the response was YES. [2023-11-28 23:57:39,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217934 conditions, 59103 events. 33966/59103 cut-off events. For 236928/241607 co-relation queries the response was YES. Maximal size of possible extension queue 1744. Compared 531826 event pairs, 26213 based on Foata normal form. 1740/57676 useless extension candidates. Maximal degree in co-relation 217808. Up to 42685 conditions per place. [2023-11-28 23:57:40,161 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 195 selfloop transitions, 22 changer transitions 0/267 dead transitions. [2023-11-28 23:57:40,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 267 transitions, 2913 flow [2023-11-28 23:57:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:57:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:57:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-11-28 23:57:40,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5850467289719626 [2023-11-28 23:57:40,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-11-28 23:57:40,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-11-28 23:57:40,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:40,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-11-28 23:57:40,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:40,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:40,164 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:40,164 INFO L175 Difference]: Start difference. First operand has 260 places, 215 transitions, 2032 flow. Second operand 5 states and 313 transitions. [2023-11-28 23:57:40,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 267 transitions, 2913 flow [2023-11-28 23:57:40,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 267 transitions, 2899 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-28 23:57:40,695 INFO L231 Difference]: Finished difference. Result has 264 places, 217 transitions, 2104 flow [2023-11-28 23:57:40,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2104, PETRI_PLACES=264, PETRI_TRANSITIONS=217} [2023-11-28 23:57:40,695 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 162 predicate places. [2023-11-28 23:57:40,695 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 217 transitions, 2104 flow [2023-11-28 23:57:40,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:40,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:40,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:40,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-28 23:57:40,696 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:57:40,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash -897028595, now seen corresponding path program 1 times [2023-11-28 23:57:40,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:40,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880456263] [2023-11-28 23:57:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:40,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:57:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880456263] [2023-11-28 23:57:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880456263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:40,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:57:40,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:57:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468745335] [2023-11-28 23:57:40,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:40,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:57:40,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:57:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:57:41,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 107 [2023-11-28 23:57:41,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 217 transitions, 2104 flow. Second operand has 8 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:41,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:41,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 107 [2023-11-28 23:57:41,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:51,450 INFO L124 PetriNetUnfolderBase]: 33962/58085 cut-off events. [2023-11-28 23:57:51,450 INFO L125 PetriNetUnfolderBase]: For 243535/249076 co-relation queries the response was YES. [2023-11-28 23:57:51,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214206 conditions, 58085 events. 33962/58085 cut-off events. For 243535/249076 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 517190 event pairs, 13591 based on Foata normal form. 1869/57339 useless extension candidates. Maximal degree in co-relation 214077. Up to 38665 conditions per place. [2023-11-28 23:57:52,168 INFO L140 encePairwiseOnDemand]: 90/107 looper letters, 202 selfloop transitions, 36 changer transitions 13/284 dead transitions. [2023-11-28 23:57:52,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 284 transitions, 3182 flow [2023-11-28 23:57:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 23:57:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 23:57:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 570 transitions. [2023-11-28 23:57:52,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097771387491014 [2023-11-28 23:57:52,169 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 570 transitions. [2023-11-28 23:57:52,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 570 transitions. [2023-11-28 23:57:52,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:52,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 570 transitions. [2023-11-28 23:57:52,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 43.84615384615385) internal successors, (570), 13 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:52,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 107.0) internal successors, (1498), 14 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:52,171 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 107.0) internal successors, (1498), 14 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:52,171 INFO L175 Difference]: Start difference. First operand has 264 places, 217 transitions, 2104 flow. Second operand 13 states and 570 transitions. [2023-11-28 23:57:52,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 284 transitions, 3182 flow [2023-11-28 23:57:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 3174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:57:52,720 INFO L231 Difference]: Finished difference. Result has 282 places, 223 transitions, 2271 flow [2023-11-28 23:57:52,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2271, PETRI_PLACES=282, PETRI_TRANSITIONS=223} [2023-11-28 23:57:52,721 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 180 predicate places. [2023-11-28 23:57:52,721 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 223 transitions, 2271 flow [2023-11-28 23:57:52,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:52,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:52,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:52,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-28 23:57:52,721 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:57:52,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash 828462886, now seen corresponding path program 1 times [2023-11-28 23:57:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124475568] [2023-11-28 23:57:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:57:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:52,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124475568] [2023-11-28 23:57:52,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124475568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:52,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:57:52,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:57:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191108357] [2023-11-28 23:57:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:52,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:57:52,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:52,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:57:52,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:57:52,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-28 23:57:52,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 223 transitions, 2271 flow. Second operand has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:52,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:52,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-28 23:57:52,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:03,970 INFO L124 PetriNetUnfolderBase]: 33950/58917 cut-off events. [2023-11-28 23:58:03,970 INFO L125 PetriNetUnfolderBase]: For 243950/248664 co-relation queries the response was YES. [2023-11-28 23:58:04,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219162 conditions, 58917 events. 33950/58917 cut-off events. For 243950/248664 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 528363 event pairs, 26487 based on Foata normal form. 1779/57558 useless extension candidates. Maximal degree in co-relation 219034. Up to 31267 conditions per place. [2023-11-28 23:58:04,838 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 199 selfloop transitions, 33 changer transitions 3/276 dead transitions. [2023-11-28 23:58:04,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 276 transitions, 3126 flow [2023-11-28 23:58:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:58:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 23:58:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 392 transitions. [2023-11-28 23:58:04,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233644859813084 [2023-11-28 23:58:04,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 392 transitions. [2023-11-28 23:58:04,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 392 transitions. [2023-11-28 23:58:04,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:04,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 392 transitions. [2023-11-28 23:58:04,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:04,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:04,841 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:04,841 INFO L175 Difference]: Start difference. First operand has 282 places, 223 transitions, 2271 flow. Second operand 7 states and 392 transitions. [2023-11-28 23:58:04,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 276 transitions, 3126 flow [2023-11-28 23:58:05,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 276 transitions, 3074 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-11-28 23:58:05,401 INFO L231 Difference]: Finished difference. Result has 277 places, 215 transitions, 2204 flow [2023-11-28 23:58:05,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2204, PETRI_PLACES=277, PETRI_TRANSITIONS=215} [2023-11-28 23:58:05,401 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 175 predicate places. [2023-11-28 23:58:05,401 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 215 transitions, 2204 flow [2023-11-28 23:58:05,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:05,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:05,402 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:05,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-28 23:58:05,402 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:58:05,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:05,402 INFO L85 PathProgramCache]: Analyzing trace with hash 813238738, now seen corresponding path program 2 times [2023-11-28 23:58:05,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:05,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870961937] [2023-11-28 23:58:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:05,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-28 23:58:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870961937] [2023-11-28 23:58:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870961937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:58:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574987618] [2023-11-28 23:58:05,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:58:05,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:58:05,543 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:58:05,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:58:05,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:58:05,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:58:05,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:58:05,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-28 23:58:05,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:58:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-28 23:58:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574987618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:58:05,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:58:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2023-11-28 23:58:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959594226] [2023-11-28 23:58:05,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:58:05,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:58:05,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:58:05,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:58:05,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2023-11-28 23:58:05,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 215 transitions, 2204 flow. Second operand has 11 states, 11 states have (on average 50.63636363636363) internal successors, (557), 11 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:05,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:05,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2023-11-28 23:58:05,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:16,543 INFO L124 PetriNetUnfolderBase]: 34250/57623 cut-off events. [2023-11-28 23:58:16,543 INFO L125 PetriNetUnfolderBase]: For 263534/267981 co-relation queries the response was YES. [2023-11-28 23:58:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208889 conditions, 57623 events. 34250/57623 cut-off events. For 263534/267981 co-relation queries the response was YES. Maximal size of possible extension queue 1624. Compared 497731 event pairs, 17472 based on Foata normal form. 2160/55629 useless extension candidates. Maximal degree in co-relation 208754. Up to 21439 conditions per place. [2023-11-28 23:58:17,411 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 190 selfloop transitions, 73 changer transitions 0/315 dead transitions. [2023-11-28 23:58:17,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 315 transitions, 3546 flow [2023-11-28 23:58:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:58:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-28 23:58:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 904 transitions. [2023-11-28 23:58:17,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280373831775701 [2023-11-28 23:58:17,413 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 904 transitions. [2023-11-28 23:58:17,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 904 transitions. [2023-11-28 23:58:17,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:17,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 904 transitions. [2023-11-28 23:58:17,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 56.5) internal successors, (904), 16 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:17,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:17,417 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:17,417 INFO L175 Difference]: Start difference. First operand has 277 places, 215 transitions, 2204 flow. Second operand 16 states and 904 transitions. [2023-11-28 23:58:17,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 315 transitions, 3546 flow [2023-11-28 23:58:17,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 315 transitions, 3447 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-28 23:58:17,911 INFO L231 Difference]: Finished difference. Result has 283 places, 226 transitions, 2352 flow [2023-11-28 23:58:17,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2352, PETRI_PLACES=283, PETRI_TRANSITIONS=226} [2023-11-28 23:58:17,911 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 181 predicate places. [2023-11-28 23:58:17,911 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 226 transitions, 2352 flow [2023-11-28 23:58:17,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.63636363636363) internal successors, (557), 11 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:17,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:17,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:17,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:58:18,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ad8ce-62a8-4c56-ba5d-c9a960cce386/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-28 23:58:18,112 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:58:18,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1201893487, now seen corresponding path program 1 times [2023-11-28 23:58:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045591352] [2023-11-28 23:58:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:18,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:58:18,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045591352] [2023-11-28 23:58:18,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045591352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:18,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:18,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:58:18,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150689021] [2023-11-28 23:58:18,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:18,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:58:18,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:18,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:58:18,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:58:18,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-28 23:58:18,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 226 transitions, 2352 flow. Second operand has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:18,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:18,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-28 23:58:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:27,960 INFO L124 PetriNetUnfolderBase]: 33930/56871 cut-off events. [2023-11-28 23:58:27,960 INFO L125 PetriNetUnfolderBase]: For 249752/255282 co-relation queries the response was YES. [2023-11-28 23:58:28,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214090 conditions, 56871 events. 33930/56871 cut-off events. For 249752/255282 co-relation queries the response was YES. Maximal size of possible extension queue 1766. Compared 493777 event pairs, 26213 based on Foata normal form. 1795/56512 useless extension candidates. Maximal degree in co-relation 213960. Up to 42830 conditions per place. [2023-11-28 23:58:28,649 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 202 selfloop transitions, 26 changer transitions 0/270 dead transitions. [2023-11-28 23:58:28,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 270 transitions, 3185 flow [2023-11-28 23:58:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:58:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:58:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 348 transitions. [2023-11-28 23:58:28,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420560747663551 [2023-11-28 23:58:28,650 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 348 transitions. [2023-11-28 23:58:28,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 348 transitions. [2023-11-28 23:58:28,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:28,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 348 transitions. [2023-11-28 23:58:28,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.0) internal successors, (348), 6 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:28,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:28,652 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:28,652 INFO L175 Difference]: Start difference. First operand has 283 places, 226 transitions, 2352 flow. Second operand 6 states and 348 transitions. [2023-11-28 23:58:28,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 270 transitions, 3185 flow [2023-11-28 23:58:28,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 270 transitions, 3098 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-28 23:58:28,930 INFO L231 Difference]: Finished difference. Result has 279 places, 225 transitions, 2335 flow [2023-11-28 23:58:28,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2335, PETRI_PLACES=279, PETRI_TRANSITIONS=225} [2023-11-28 23:58:28,931 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 177 predicate places. [2023-11-28 23:58:28,931 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 225 transitions, 2335 flow [2023-11-28 23:58:28,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:28,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:28,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:28,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-28 23:58:28,932 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-28 23:58:28,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1585917800, now seen corresponding path program 1 times [2023-11-28 23:58:28,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:28,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743880971] [2023-11-28 23:58:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:58:29,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:29,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743880971] [2023-11-28 23:58:29,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743880971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:29,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:29,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:58:29,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556449131] [2023-11-28 23:58:29,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:29,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:58:29,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:29,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:58:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:58:29,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-28 23:58:29,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 225 transitions, 2335 flow. Second operand has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:29,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:29,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-28 23:58:29,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand