./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/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_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/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_e01b82ab-4461-47bd-840c-c6f4ac47b346/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 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:57:17,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:57:17,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:57:17,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:57:17,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:57:17,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:57:17,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:57:17,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:57:17,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:57:17,382 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:57:17,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:57:17,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:57:17,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:57:17,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:57:17,385 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:57:17,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:57:17,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:57:17,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:57:17,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:57:17,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:57:17,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:57:17,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:57:17,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:57:17,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:57:17,390 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:57:17,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:57:17,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:57:17,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:57:17,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:57:17,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:57:17,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:57:17,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:57:17,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:57:17,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:57:17,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:57:17,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:57:17,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:57:17,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:57:17,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:57:17,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:57:17,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:57:17,396 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:57:17,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:57:17,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:57:17,397 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_e01b82ab-4461-47bd-840c-c6f4ac47b346/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 [2023-11-29 00:57:17,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:57:17,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:57:17,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:57:17,646 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:57:17,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:57:17,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-29 00:57:20,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:57:20,583 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:57:20,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-29 00:57:20,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/data/27bdc61bf/92b4b11784d7406c882eb54cec6dced9/FLAG96e872d71 [2023-11-29 00:57:20,608 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/data/27bdc61bf/92b4b11784d7406c882eb54cec6dced9 [2023-11-29 00:57:20,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:57:20,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:57:20,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:20,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:57:20,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:57:20,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:20,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a647ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20, skipping insertion in model container [2023-11-29 00:57:20,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:20,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:57:20,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:20,845 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:57:20,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:57:20,893 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:57:20,893 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:57:20,901 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:57:20,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20 WrapperNode [2023-11-29 00:57:20,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:57:20,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:57:20,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:57:20,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:57:20,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:20,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:20,960 INFO L138 Inliner]: procedures = 28, calls = 81, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 444 [2023-11-29 00:57:20,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:57:20,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:57:20,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:57:20,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:57:20,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:20,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:20,981 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,004 INFO L175 MemorySlicer]: Split 30 memory accesses to 7 slices as follows [2, 3, 2, 3, 16, 2, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 1, 1, 1, 4, 1, 1]. [2023-11-29 00:57:21,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:57:21,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:57:21,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:57:21,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:57:21,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (1/1) ... [2023-11-29 00:57:21,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:57:21,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:21,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:57:21,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:57:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:57:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:57:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:57:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 00:57:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 00:57:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 00:57:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 00:57:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 00:57:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:57:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:57:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:57:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:57:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:57:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:57:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 00:57:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 00:57:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:57:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:57:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:57:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:57:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:57:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 00:57:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 00:57:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:57:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:57:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:57:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:57:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:57:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:57:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:57:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:57:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:57:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:57:21,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:57:21,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:57:21,115 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:57:21,281 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:57:21,284 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:57:21,840 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:57:22,361 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:57:22,362 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-29 00:57:22,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:57:22 BoogieIcfgContainer [2023-11-29 00:57:22,362 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:57:22,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:57:22,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:57:22,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:57:22,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:57:20" (1/3) ... [2023-11-29 00:57:22,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370ec5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:57:22, skipping insertion in model container [2023-11-29 00:57:22,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:57:20" (2/3) ... [2023-11-29 00:57:22,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370ec5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:57:22, skipping insertion in model container [2023-11-29 00:57:22,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:57:22" (3/3) ... [2023-11-29 00:57:22,369 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-11-29 00:57:22,377 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:57:22,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:57:22,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-29 00:57:22,385 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:57:22,503 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:57:22,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 79 transitions, 179 flow [2023-11-29 00:57:22,566 INFO L124 PetriNetUnfolderBase]: 9/76 cut-off events. [2023-11-29 00:57:22,566 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:57:22,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 9/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 232 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-29 00:57:22,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 79 transitions, 179 flow [2023-11-29 00:57:22,575 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 74 transitions, 163 flow [2023-11-29 00:57:22,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:57:22,590 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;@10bb074, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:57:22,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-29 00:57:22,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:57:22,594 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 00:57:22,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:57:22,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:22,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:57:22,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:22,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1371871, now seen corresponding path program 1 times [2023-11-29 00:57:22,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:22,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500165091] [2023-11-29 00:57:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:22,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500165091] [2023-11-29 00:57:22,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500165091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:22,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:22,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:57:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47146978] [2023-11-29 00:57:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:22,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:22,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:57:22,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:22,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:22,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:57:22,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:23,500 INFO L124 PetriNetUnfolderBase]: 1029/1513 cut-off events. [2023-11-29 00:57:23,500 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 00:57:23,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3058 conditions, 1513 events. 1029/1513 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8069 event pairs, 605 based on Foata normal form. 4/841 useless extension candidates. Maximal degree in co-relation 2759. Up to 1397 conditions per place. [2023-11-29 00:57:23,520 INFO L140 encePairwiseOnDemand]: 57/79 looper letters, 33 selfloop transitions, 12 changer transitions 2/64 dead transitions. [2023-11-29 00:57:23,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 237 flow [2023-11-29 00:57:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:57:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-29 00:57:23,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354430379746833 [2023-11-29 00:57:23,534 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-29 00:57:23,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-29 00:57:23,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:23,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-29 00:57:23,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:23,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:23,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:23,546 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 163 flow. Second operand 4 states and 137 transitions. [2023-11-29 00:57:23,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 237 flow [2023-11-29 00:57:23,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 228 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:57:23,556 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 153 flow [2023-11-29 00:57:23,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-11-29 00:57:23,561 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -12 predicate places. [2023-11-29 00:57:23,561 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 153 flow [2023-11-29 00:57:23,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:23,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:23,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 00:57:23,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:57:23,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:23,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:23,563 INFO L85 PathProgramCache]: Analyzing trace with hash 42529403, now seen corresponding path program 1 times [2023-11-29 00:57:23,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:23,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911434413] [2023-11-29 00:57:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:23,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:23,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911434413] [2023-11-29 00:57:23,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911434413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:23,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:23,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:57:23,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486723145] [2023-11-29 00:57:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:23,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:23,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:23,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:23,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:57:23,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:23,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:23,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:57:23,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:24,152 INFO L124 PetriNetUnfolderBase]: 1025/1515 cut-off events. [2023-11-29 00:57:24,152 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-29 00:57:24,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3050 conditions, 1515 events. 1025/1515 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8072 event pairs, 601 based on Foata normal form. 4/852 useless extension candidates. Maximal degree in co-relation 2952. Up to 1401 conditions per place. [2023-11-29 00:57:24,167 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 43 selfloop transitions, 14 changer transitions 0/74 dead transitions. [2023-11-29 00:57:24,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 311 flow [2023-11-29 00:57:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:57:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-29 00:57:24,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462025316455696 [2023-11-29 00:57:24,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-29 00:57:24,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-29 00:57:24,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:24,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-29 00:57:24,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,173 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 153 flow. Second operand 4 states and 141 transitions. [2023-11-29 00:57:24,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 311 flow [2023-11-29 00:57:24,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 267 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:57:24,176 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 241 flow [2023-11-29 00:57:24,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2023-11-29 00:57:24,177 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-11-29 00:57:24,178 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 241 flow [2023-11-29 00:57:24,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:24,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:57:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:57:24,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:24,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2078657653, now seen corresponding path program 1 times [2023-11-29 00:57:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884798035] [2023-11-29 00:57:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:24,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884798035] [2023-11-29 00:57:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884798035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:24,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:57:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544907039] [2023-11-29 00:57:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:24,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2023-11-29 00:57:24,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:24,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2023-11-29 00:57:24,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:24,710 INFO L124 PetriNetUnfolderBase]: 1026/1519 cut-off events. [2023-11-29 00:57:24,711 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-29 00:57:24,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3079 conditions, 1519 events. 1026/1519 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8174 event pairs, 601 based on Foata normal form. 1/854 useless extension candidates. Maximal degree in co-relation 2988. Up to 1409 conditions per place. [2023-11-29 00:57:24,724 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 53 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-11-29 00:57:24,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 363 flow [2023-11-29 00:57:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:57:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2023-11-29 00:57:24,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810126582278481 [2023-11-29 00:57:24,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 152 transitions. [2023-11-29 00:57:24,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 152 transitions. [2023-11-29 00:57:24,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:24,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 152 transitions. [2023-11-29 00:57:24,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,730 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 241 flow. Second operand 4 states and 152 transitions. [2023-11-29 00:57:24,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 363 flow [2023-11-29 00:57:24,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 363 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:57:24,733 INFO L231 Difference]: Finished difference. Result has 69 places, 77 transitions, 273 flow [2023-11-29 00:57:24,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=69, PETRI_TRANSITIONS=77} [2023-11-29 00:57:24,734 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-11-29 00:57:24,734 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 77 transitions, 273 flow [2023-11-29 00:57:24,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:24,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:24,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 00:57:24,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:57:24,735 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:24,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash -20549306, now seen corresponding path program 1 times [2023-11-29 00:57:24,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:24,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863969247] [2023-11-29 00:57:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:24,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863969247] [2023-11-29 00:57:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863969247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729264583] [2023-11-29 00:57:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:24,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:24,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:57:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:24,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:57:24,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:25,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:25,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729264583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:25,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:25,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-29 00:57:25,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25044350] [2023-11-29 00:57:25,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:25,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:57:25,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:25,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:57:25,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:57:25,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:57:25,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 77 transitions, 273 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:25,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:25,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:57:25,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:25,683 INFO L124 PetriNetUnfolderBase]: 1038/1567 cut-off events. [2023-11-29 00:57:25,683 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-29 00:57:25,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 1567 events. 1038/1567 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8444 event pairs, 601 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 3195. Up to 1410 conditions per place. [2023-11-29 00:57:25,693 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 46 selfloop transitions, 50 changer transitions 0/113 dead transitions. [2023-11-29 00:57:25,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 113 transitions, 630 flow [2023-11-29 00:57:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:57:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:57:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2023-11-29 00:57:25,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860759493670886 [2023-11-29 00:57:25,697 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2023-11-29 00:57:25,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2023-11-29 00:57:25,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:25,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2023-11-29 00:57:25,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 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) [2023-11-29 00:57:25,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:25,703 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:25,703 INFO L175 Difference]: Start difference. First operand has 69 places, 77 transitions, 273 flow. Second operand 10 states and 305 transitions. [2023-11-29 00:57:25,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 113 transitions, 630 flow [2023-11-29 00:57:25,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:57:25,708 INFO L231 Difference]: Finished difference. Result has 80 places, 113 transitions, 599 flow [2023-11-29 00:57:25,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=599, PETRI_PLACES=80, PETRI_TRANSITIONS=113} [2023-11-29 00:57:25,709 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-11-29 00:57:25,709 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 113 transitions, 599 flow [2023-11-29 00:57:25,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:25,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:25,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:25,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:25,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:25,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:25,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash -430141564, now seen corresponding path program 1 times [2023-11-29 00:57:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:25,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435928004] [2023-11-29 00:57:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:25,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:25,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435928004] [2023-11-29 00:57:25,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435928004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:25,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:25,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:57:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193961076] [2023-11-29 00:57:25,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:25,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:25,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:26,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2023-11-29 00:57:26,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 113 transitions, 599 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:26,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:26,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2023-11-29 00:57:26,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:26,436 INFO L124 PetriNetUnfolderBase]: 1044/1592 cut-off events. [2023-11-29 00:57:26,436 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-11-29 00:57:26,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3395 conditions, 1592 events. 1044/1592 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8714 event pairs, 601 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 3362. Up to 1448 conditions per place. [2023-11-29 00:57:26,452 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 103 selfloop transitions, 9 changer transitions 0/131 dead transitions. [2023-11-29 00:57:26,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 131 transitions, 937 flow [2023-11-29 00:57:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:57:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2023-11-29 00:57:26,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49050632911392406 [2023-11-29 00:57:26,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 155 transitions. [2023-11-29 00:57:26,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 155 transitions. [2023-11-29 00:57:26,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:26,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 155 transitions. [2023-11-29 00:57:26,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:26,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:26,456 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:26,456 INFO L175 Difference]: Start difference. First operand has 80 places, 113 transitions, 599 flow. Second operand 4 states and 155 transitions. [2023-11-29 00:57:26,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 131 transitions, 937 flow [2023-11-29 00:57:26,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 776 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-11-29 00:57:26,464 INFO L231 Difference]: Finished difference. Result has 81 places, 120 transitions, 546 flow [2023-11-29 00:57:26,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=81, PETRI_TRANSITIONS=120} [2023-11-29 00:57:26,465 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-11-29 00:57:26,465 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 120 transitions, 546 flow [2023-11-29 00:57:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:26,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:26,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:57:26,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:26,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash -450265142, now seen corresponding path program 1 times [2023-11-29 00:57:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:26,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829899048] [2023-11-29 00:57:26,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:26,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:57:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:26,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829899048] [2023-11-29 00:57:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829899048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:26,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:57:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347269858] [2023-11-29 00:57:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:57:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:57:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:57:26,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:26,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 120 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:26,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:26,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:27,298 INFO L124 PetriNetUnfolderBase]: 1454/2362 cut-off events. [2023-11-29 00:57:27,298 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-29 00:57:27,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 2362 events. 1454/2362 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 15287 event pairs, 988 based on Foata normal form. 33/1499 useless extension candidates. Maximal degree in co-relation 4942. Up to 1457 conditions per place. [2023-11-29 00:57:27,318 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 141 selfloop transitions, 18 changer transitions 0/180 dead transitions. [2023-11-29 00:57:27,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 180 transitions, 1142 flow [2023-11-29 00:57:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:57:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:57:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 250 transitions. [2023-11-29 00:57:27,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274261603375527 [2023-11-29 00:57:27,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 250 transitions. [2023-11-29 00:57:27,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 250 transitions. [2023-11-29 00:57:27,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:27,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 250 transitions. [2023-11-29 00:57:27,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,324 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,324 INFO L175 Difference]: Start difference. First operand has 81 places, 120 transitions, 546 flow. Second operand 6 states and 250 transitions. [2023-11-29 00:57:27,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 180 transitions, 1142 flow [2023-11-29 00:57:27,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 180 transitions, 1135 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:57:27,331 INFO L231 Difference]: Finished difference. Result has 88 places, 131 transitions, 699 flow [2023-11-29 00:57:27,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=699, PETRI_PLACES=88, PETRI_TRANSITIONS=131} [2023-11-29 00:57:27,332 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2023-11-29 00:57:27,333 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 131 transitions, 699 flow [2023-11-29 00:57:27,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:27,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:27,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:57:27,334 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:27,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:27,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1048178964, now seen corresponding path program 1 times [2023-11-29 00:57:27,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:27,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365247614] [2023-11-29 00:57:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:27,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:27,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:27,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365247614] [2023-11-29 00:57:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365247614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:27,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:27,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:57:27,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885736581] [2023-11-29 00:57:27,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:27,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:57:27,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:57:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:57:27,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:27,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 131 transitions, 699 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:27,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:27,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:27,946 INFO L124 PetriNetUnfolderBase]: 1408/2168 cut-off events. [2023-11-29 00:57:27,946 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2023-11-29 00:57:27,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4895 conditions, 2168 events. 1408/2168 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11649 event pairs, 347 based on Foata normal form. 31/1667 useless extension candidates. Maximal degree in co-relation 4856. Up to 1613 conditions per place. [2023-11-29 00:57:27,963 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 118 selfloop transitions, 2 changer transitions 3/144 dead transitions. [2023-11-29 00:57:27,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 977 flow [2023-11-29 00:57:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:57:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:57:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-29 00:57:27,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075949367088608 [2023-11-29 00:57:27,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-29 00:57:27,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-29 00:57:27,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:27,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-29 00:57:27,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,967 INFO L175 Difference]: Start difference. First operand has 88 places, 131 transitions, 699 flow. Second operand 3 states and 144 transitions. [2023-11-29 00:57:27,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 977 flow [2023-11-29 00:57:27,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 969 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 00:57:27,974 INFO L231 Difference]: Finished difference. Result has 90 places, 132 transitions, 713 flow [2023-11-29 00:57:27,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=713, PETRI_PLACES=90, PETRI_TRANSITIONS=132} [2023-11-29 00:57:27,975 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2023-11-29 00:57:27,975 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 132 transitions, 713 flow [2023-11-29 00:57:27,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:27,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:27,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:27,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:57:27,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:27,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1048178963, now seen corresponding path program 1 times [2023-11-29 00:57:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563605620] [2023-11-29 00:57:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:28,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:28,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563605620] [2023-11-29 00:57:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563605620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:28,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:28,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:57:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6749615] [2023-11-29 00:57:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:28,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:57:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:57:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:57:28,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:28,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 132 transitions, 713 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:28,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:28,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:28,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:28,499 INFO L124 PetriNetUnfolderBase]: 1359/2079 cut-off events. [2023-11-29 00:57:28,499 INFO L125 PetriNetUnfolderBase]: For 538/546 co-relation queries the response was YES. [2023-11-29 00:57:28,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2079 events. 1359/2079 cut-off events. For 538/546 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10942 event pairs, 304 based on Foata normal form. 30/1652 useless extension candidates. Maximal degree in co-relation 5355. Up to 1613 conditions per place. [2023-11-29 00:57:28,518 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 117 selfloop transitions, 2 changer transitions 3/143 dead transitions. [2023-11-29 00:57:28,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 143 transitions, 985 flow [2023-11-29 00:57:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:57:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:57:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-11-29 00:57:28,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2023-11-29 00:57:28,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-11-29 00:57:28,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-11-29 00:57:28,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:28,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-11-29 00:57:28,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:28,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:28,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:28,522 INFO L175 Difference]: Start difference. First operand has 90 places, 132 transitions, 713 flow. Second operand 3 states and 138 transitions. [2023-11-29 00:57:28,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 143 transitions, 985 flow [2023-11-29 00:57:28,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 143 transitions, 983 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:57:28,529 INFO L231 Difference]: Finished difference. Result has 92 places, 132 transitions, 719 flow [2023-11-29 00:57:28,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=719, PETRI_PLACES=92, PETRI_TRANSITIONS=132} [2023-11-29 00:57:28,530 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2023-11-29 00:57:28,530 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 132 transitions, 719 flow [2023-11-29 00:57:28,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:28,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:28,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:28,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:57:28,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:28,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1121410441, now seen corresponding path program 1 times [2023-11-29 00:57:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:28,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211094896] [2023-11-29 00:57:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:57:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211094896] [2023-11-29 00:57:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211094896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844788272] [2023-11-29 00:57:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:28,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:28,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:28,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:28,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:57:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:28,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:57:28,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:28,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844788272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:29,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-29 00:57:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730844139] [2023-11-29 00:57:29,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:29,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:57:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:29,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:57:29,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:57:29,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 79 [2023-11-29 00:57:29,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 132 transitions, 719 flow. Second operand has 19 states, 19 states have (on average 19.42105263157895) internal successors, (369), 19 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:29,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:29,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 79 [2023-11-29 00:57:29,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:30,326 INFO L124 PetriNetUnfolderBase]: 1955/3163 cut-off events. [2023-11-29 00:57:30,327 INFO L125 PetriNetUnfolderBase]: For 1034/1034 co-relation queries the response was YES. [2023-11-29 00:57:30,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8265 conditions, 3163 events. 1955/3163 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 20846 event pairs, 1421 based on Foata normal form. 2/2586 useless extension candidates. Maximal degree in co-relation 8212. Up to 1564 conditions per place. [2023-11-29 00:57:30,346 INFO L140 encePairwiseOnDemand]: 64/79 looper letters, 113 selfloop transitions, 76 changer transitions 0/204 dead transitions. [2023-11-29 00:57:30,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 204 transitions, 1486 flow [2023-11-29 00:57:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:57:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 00:57:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 425 transitions. [2023-11-29 00:57:30,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29887482419127986 [2023-11-29 00:57:30,349 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 425 transitions. [2023-11-29 00:57:30,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 425 transitions. [2023-11-29 00:57:30,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:30,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 425 transitions. [2023-11-29 00:57:30,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 23.61111111111111) internal successors, (425), 18 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:30,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:30,354 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 79.0) internal successors, (1501), 19 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:30,355 INFO L175 Difference]: Start difference. First operand has 92 places, 132 transitions, 719 flow. Second operand 18 states and 425 transitions. [2023-11-29 00:57:30,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 204 transitions, 1486 flow [2023-11-29 00:57:30,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 204 transitions, 1480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:57:30,366 INFO L231 Difference]: Finished difference. Result has 108 places, 163 transitions, 1181 flow [2023-11-29 00:57:30,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1181, PETRI_PLACES=108, PETRI_TRANSITIONS=163} [2023-11-29 00:57:30,366 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2023-11-29 00:57:30,367 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 163 transitions, 1181 flow [2023-11-29 00:57:30,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.42105263157895) internal successors, (369), 19 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:30,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:30,367 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:30,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:57:30,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:30,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:30,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1095269091, now seen corresponding path program 1 times [2023-11-29 00:57:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:30,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028860111] [2023-11-29 00:57:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:30,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:30,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028860111] [2023-11-29 00:57:30,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028860111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:30,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509628662] [2023-11-29 00:57:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:30,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:30,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:30,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:30,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:57:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:30,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:57:30,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:30,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509628662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:30,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:57:30,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 00:57:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958675467] [2023-11-29 00:57:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:57:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:57:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:57:30,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2023-11-29 00:57:30,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 163 transitions, 1181 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:30,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:30,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2023-11-29 00:57:30,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:31,512 INFO L124 PetriNetUnfolderBase]: 1974/3189 cut-off events. [2023-11-29 00:57:31,512 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2023-11-29 00:57:31,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8462 conditions, 3189 events. 1974/3189 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 20858 event pairs, 1435 based on Foata normal form. 3/2603 useless extension candidates. Maximal degree in co-relation 8401. Up to 2876 conditions per place. [2023-11-29 00:57:31,527 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 145 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2023-11-29 00:57:31,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 185 transitions, 1703 flow [2023-11-29 00:57:31,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:57:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:57:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2023-11-29 00:57:31,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43248945147679324 [2023-11-29 00:57:31,528 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 205 transitions. [2023-11-29 00:57:31,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 205 transitions. [2023-11-29 00:57:31,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:31,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 205 transitions. [2023-11-29 00:57:31,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:31,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:31,531 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:31,531 INFO L175 Difference]: Start difference. First operand has 108 places, 163 transitions, 1181 flow. Second operand 6 states and 205 transitions. [2023-11-29 00:57:31,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 185 transitions, 1703 flow [2023-11-29 00:57:31,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 185 transitions, 1607 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 00:57:31,541 INFO L231 Difference]: Finished difference. Result has 107 places, 162 transitions, 1127 flow [2023-11-29 00:57:31,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1127, PETRI_PLACES=107, PETRI_TRANSITIONS=162} [2023-11-29 00:57:31,542 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 32 predicate places. [2023-11-29 00:57:31,542 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 162 transitions, 1127 flow [2023-11-29 00:57:31,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:31,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:31,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:31,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:57:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:57:31,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:31,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash -406395170, now seen corresponding path program 1 times [2023-11-29 00:57:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:31,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606198301] [2023-11-29 00:57:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:31,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606198301] [2023-11-29 00:57:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606198301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347017445] [2023-11-29 00:57:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:31,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:31,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:31,843 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:31,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:57:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:31,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:57:31,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:32,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347017445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:32,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:32,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 00:57:32,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881844289] [2023-11-29 00:57:32,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:32,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:57:32,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:57:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:57:32,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2023-11-29 00:57:32,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 162 transitions, 1127 flow. Second operand has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 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) [2023-11-29 00:57:32,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:32,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2023-11-29 00:57:32,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:32,812 INFO L124 PetriNetUnfolderBase]: 2028/3414 cut-off events. [2023-11-29 00:57:32,812 INFO L125 PetriNetUnfolderBase]: For 1630/1630 co-relation queries the response was YES. [2023-11-29 00:57:32,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9353 conditions, 3414 events. 2028/3414 cut-off events. For 1630/1630 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 22838 event pairs, 1435 based on Foata normal form. 9/2837 useless extension candidates. Maximal degree in co-relation 9301. Up to 2942 conditions per place. [2023-11-29 00:57:32,830 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 222 selfloop transitions, 38 changer transitions 0/278 dead transitions. [2023-11-29 00:57:32,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 278 transitions, 2611 flow [2023-11-29 00:57:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:57:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:57:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2023-11-29 00:57:32,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41645569620253164 [2023-11-29 00:57:32,832 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2023-11-29 00:57:32,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2023-11-29 00:57:32,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:32,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2023-11-29 00:57:32,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:32,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:32,836 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:32,837 INFO L175 Difference]: Start difference. First operand has 107 places, 162 transitions, 1127 flow. Second operand 10 states and 329 transitions. [2023-11-29 00:57:32,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 278 transitions, 2611 flow [2023-11-29 00:57:32,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 278 transitions, 2511 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-29 00:57:32,848 INFO L231 Difference]: Finished difference. Result has 115 places, 186 transitions, 1350 flow [2023-11-29 00:57:32,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1350, PETRI_PLACES=115, PETRI_TRANSITIONS=186} [2023-11-29 00:57:32,849 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 40 predicate places. [2023-11-29 00:57:32,849 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 186 transitions, 1350 flow [2023-11-29 00:57:32,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.833333333333332) internal successors, (334), 12 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) [2023-11-29 00:57:32,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:32,850 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 00:57:32,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:57:33,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:33,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:33,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 697395899, now seen corresponding path program 2 times [2023-11-29 00:57:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:33,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663245549] [2023-11-29 00:57:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:33,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:33,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663245549] [2023-11-29 00:57:33,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663245549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:33,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811762659] [2023-11-29 00:57:33,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:33,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:33,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:33,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:33,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:57:33,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:57:33,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:33,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:57:33,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:57:33,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:57:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811762659] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:33,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:33,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 00:57:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756720264] [2023-11-29 00:57:33,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:57:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:33,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:57:33,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:57:33,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:57:33,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 186 transitions, 1350 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:33,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:33,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:57:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:34,316 INFO L124 PetriNetUnfolderBase]: 2048/3493 cut-off events. [2023-11-29 00:57:34,316 INFO L125 PetriNetUnfolderBase]: For 2234/2234 co-relation queries the response was YES. [2023-11-29 00:57:34,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9684 conditions, 3493 events. 2048/3493 cut-off events. For 2234/2234 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 23436 event pairs, 1435 based on Foata normal form. 21/2928 useless extension candidates. Maximal degree in co-relation 9630. Up to 3014 conditions per place. [2023-11-29 00:57:34,340 INFO L140 encePairwiseOnDemand]: 61/79 looper letters, 67 selfloop transitions, 125 changer transitions 0/207 dead transitions. [2023-11-29 00:57:34,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 207 transitions, 1905 flow [2023-11-29 00:57:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:57:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 00:57:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 589 transitions. [2023-11-29 00:57:34,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106540084388186 [2023-11-29 00:57:34,344 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 589 transitions. [2023-11-29 00:57:34,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 589 transitions. [2023-11-29 00:57:34,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:34,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 589 transitions. [2023-11-29 00:57:34,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 24.541666666666668) internal successors, (589), 24 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:34,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 79.0) internal successors, (1975), 25 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:34,351 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 79.0) internal successors, (1975), 25 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:34,351 INFO L175 Difference]: Start difference. First operand has 115 places, 186 transitions, 1350 flow. Second operand 24 states and 589 transitions. [2023-11-29 00:57:34,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 207 transitions, 1905 flow [2023-11-29 00:57:34,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 207 transitions, 1877 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 00:57:34,369 INFO L231 Difference]: Finished difference. Result has 137 places, 207 transitions, 1814 flow [2023-11-29 00:57:34,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1814, PETRI_PLACES=137, PETRI_TRANSITIONS=207} [2023-11-29 00:57:34,370 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 62 predicate places. [2023-11-29 00:57:34,371 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 207 transitions, 1814 flow [2023-11-29 00:57:34,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:34,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:34,371 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:34,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:57:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:34,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:34,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1861241318, now seen corresponding path program 1 times [2023-11-29 00:57:34,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:34,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050413573] [2023-11-29 00:57:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:34,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:57:34,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050413573] [2023-11-29 00:57:34,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050413573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70003167] [2023-11-29 00:57:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:34,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:34,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:34,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:57:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:34,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:57:34,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:57:34,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:57:34,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70003167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:34,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:34,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 00:57:34,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952836372] [2023-11-29 00:57:34,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:34,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:57:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:34,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:57:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:57:34,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2023-11-29 00:57:34,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 207 transitions, 1814 flow. Second operand has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:34,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:34,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2023-11-29 00:57:34,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:35,579 INFO L124 PetriNetUnfolderBase]: 2051/3505 cut-off events. [2023-11-29 00:57:35,579 INFO L125 PetriNetUnfolderBase]: For 2626/2626 co-relation queries the response was YES. [2023-11-29 00:57:35,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10120 conditions, 3505 events. 2051/3505 cut-off events. For 2626/2626 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 23410 event pairs, 1435 based on Foata normal form. 3/2922 useless extension candidates. Maximal degree in co-relation 10031. Up to 3189 conditions per place. [2023-11-29 00:57:35,595 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 163 selfloop transitions, 36 changer transitions 0/216 dead transitions. [2023-11-29 00:57:35,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 216 transitions, 2254 flow [2023-11-29 00:57:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:57:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:57:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2023-11-29 00:57:35,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012658227848101 [2023-11-29 00:57:35,597 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 317 transitions. [2023-11-29 00:57:35,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 317 transitions. [2023-11-29 00:57:35,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:35,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 317 transitions. [2023-11-29 00:57:35,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 31.7) internal successors, (317), 10 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:35,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:35,601 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:35,601 INFO L175 Difference]: Start difference. First operand has 137 places, 207 transitions, 1814 flow. Second operand 10 states and 317 transitions. [2023-11-29 00:57:35,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 216 transitions, 2254 flow [2023-11-29 00:57:35,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 216 transitions, 1987 flow, removed 30 selfloop flow, removed 10 redundant places. [2023-11-29 00:57:35,624 INFO L231 Difference]: Finished difference. Result has 139 places, 216 transitions, 1679 flow [2023-11-29 00:57:35,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=139, PETRI_TRANSITIONS=216} [2023-11-29 00:57:35,625 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 64 predicate places. [2023-11-29 00:57:35,625 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 216 transitions, 1679 flow [2023-11-29 00:57:35,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.5) internal successors, (330), 12 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:35,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:35,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:35,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:57:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:35,826 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:35,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1450833952, now seen corresponding path program 1 times [2023-11-29 00:57:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:35,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50924365] [2023-11-29 00:57:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:35,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50924365] [2023-11-29 00:57:35,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50924365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:35,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:35,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:57:35,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465693664] [2023-11-29 00:57:35,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:35,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:35,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:35,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:35,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 216 transitions, 1679 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:35,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:35,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:35,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:36,709 INFO L124 PetriNetUnfolderBase]: 2288/4320 cut-off events. [2023-11-29 00:57:36,709 INFO L125 PetriNetUnfolderBase]: For 3857/3857 co-relation queries the response was YES. [2023-11-29 00:57:36,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12815 conditions, 4320 events. 2288/4320 cut-off events. For 3857/3857 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 31550 event pairs, 1540 based on Foata normal form. 63/3805 useless extension candidates. Maximal degree in co-relation 12730. Up to 3212 conditions per place. [2023-11-29 00:57:36,727 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 346 selfloop transitions, 3 changer transitions 16/383 dead transitions. [2023-11-29 00:57:36,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 383 transitions, 3821 flow [2023-11-29 00:57:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:57:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2023-11-29 00:57:36,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2023-11-29 00:57:36,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 184 transitions. [2023-11-29 00:57:36,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 184 transitions. [2023-11-29 00:57:36,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:36,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 184 transitions. [2023-11-29 00:57:36,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:36,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:36,731 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:36,731 INFO L175 Difference]: Start difference. First operand has 139 places, 216 transitions, 1679 flow. Second operand 4 states and 184 transitions. [2023-11-29 00:57:36,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 383 transitions, 3821 flow [2023-11-29 00:57:36,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 383 transitions, 3753 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 00:57:36,763 INFO L231 Difference]: Finished difference. Result has 141 places, 216 transitions, 1656 flow [2023-11-29 00:57:36,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1656, PETRI_PLACES=141, PETRI_TRANSITIONS=216} [2023-11-29 00:57:36,764 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 66 predicate places. [2023-11-29 00:57:36,764 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 216 transitions, 1656 flow [2023-11-29 00:57:36,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:36,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:36,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:36,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:57:36,765 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:36,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2119212651, now seen corresponding path program 1 times [2023-11-29 00:57:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863820492] [2023-11-29 00:57:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:36,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:57:37,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:37,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863820492] [2023-11-29 00:57:37,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863820492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:37,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:37,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:37,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122810475] [2023-11-29 00:57:37,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:37,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:57:37,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:37,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:57:37,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:57:37,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:37,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 216 transitions, 1656 flow. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:37,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:37,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:37,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:38,247 INFO L124 PetriNetUnfolderBase]: 3393/6477 cut-off events. [2023-11-29 00:57:38,247 INFO L125 PetriNetUnfolderBase]: For 7291/7300 co-relation queries the response was YES. [2023-11-29 00:57:38,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20135 conditions, 6477 events. 3393/6477 cut-off events. For 7291/7300 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 47933 event pairs, 908 based on Foata normal form. 46/5618 useless extension candidates. Maximal degree in co-relation 19994. Up to 3131 conditions per place. [2023-11-29 00:57:38,275 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 263 selfloop transitions, 29 changer transitions 20/330 dead transitions. [2023-11-29 00:57:38,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 330 transitions, 3121 flow [2023-11-29 00:57:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:57:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:57:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 249 transitions. [2023-11-29 00:57:38,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253164556962026 [2023-11-29 00:57:38,276 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 249 transitions. [2023-11-29 00:57:38,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 249 transitions. [2023-11-29 00:57:38,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:38,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 249 transitions. [2023-11-29 00:57:38,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.5) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:38,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:38,279 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:38,279 INFO L175 Difference]: Start difference. First operand has 141 places, 216 transitions, 1656 flow. Second operand 6 states and 249 transitions. [2023-11-29 00:57:38,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 330 transitions, 3121 flow [2023-11-29 00:57:38,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 330 transitions, 3116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:57:38,314 INFO L231 Difference]: Finished difference. Result has 146 places, 231 transitions, 1939 flow [2023-11-29 00:57:38,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1939, PETRI_PLACES=146, PETRI_TRANSITIONS=231} [2023-11-29 00:57:38,315 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 71 predicate places. [2023-11-29 00:57:38,315 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 231 transitions, 1939 flow [2023-11-29 00:57:38,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:38,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:38,316 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 00:57:38,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:57:38,316 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:38,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1069012462, now seen corresponding path program 1 times [2023-11-29 00:57:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:38,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393280628] [2023-11-29 00:57:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:38,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393280628] [2023-11-29 00:57:38,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393280628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357475293] [2023-11-29 00:57:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:38,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:38,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:38,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:38,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:57:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:38,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:57:38,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:38,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:38,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357475293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:38,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:38,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-11-29 00:57:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904150307] [2023-11-29 00:57:38,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:38,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:57:38,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:57:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:57:38,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:57:38,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 231 transitions, 1939 flow. Second operand has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:38,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:38,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:57:38,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:40,660 INFO L124 PetriNetUnfolderBase]: 3257/7774 cut-off events. [2023-11-29 00:57:40,660 INFO L125 PetriNetUnfolderBase]: For 23974/23974 co-relation queries the response was YES. [2023-11-29 00:57:40,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27686 conditions, 7774 events. 3257/7774 cut-off events. For 23974/23974 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 65105 event pairs, 1770 based on Foata normal form. 476/7628 useless extension candidates. Maximal degree in co-relation 27543. Up to 4836 conditions per place. [2023-11-29 00:57:40,697 INFO L140 encePairwiseOnDemand]: 62/79 looper letters, 79 selfloop transitions, 291 changer transitions 0/385 dead transitions. [2023-11-29 00:57:40,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 385 transitions, 4184 flow [2023-11-29 00:57:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 00:57:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 00:57:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 729 transitions. [2023-11-29 00:57:40,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3549172346640701 [2023-11-29 00:57:40,701 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 729 transitions. [2023-11-29 00:57:40,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 729 transitions. [2023-11-29 00:57:40,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:40,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 729 transitions. [2023-11-29 00:57:40,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 28.03846153846154) internal successors, (729), 26 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:40,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 79.0) internal successors, (2133), 27 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:40,708 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 79.0) internal successors, (2133), 27 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:40,708 INFO L175 Difference]: Start difference. First operand has 146 places, 231 transitions, 1939 flow. Second operand 26 states and 729 transitions. [2023-11-29 00:57:40,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 385 transitions, 4184 flow [2023-11-29 00:57:40,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 385 transitions, 4180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:57:40,776 INFO L231 Difference]: Finished difference. Result has 176 places, 385 transitions, 4188 flow [2023-11-29 00:57:40,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4188, PETRI_PLACES=176, PETRI_TRANSITIONS=385} [2023-11-29 00:57:40,777 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 101 predicate places. [2023-11-29 00:57:40,777 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 385 transitions, 4188 flow [2023-11-29 00:57:40,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:40,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:40,778 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] [2023-11-29 00:57:40,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:40,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:57:40,978 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:40,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2008217428, now seen corresponding path program 1 times [2023-11-29 00:57:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168294635] [2023-11-29 00:57:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:40,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:57:41,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:41,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168294635] [2023-11-29 00:57:41,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168294635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:41,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:41,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:57:41,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711018173] [2023-11-29 00:57:41,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:41,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:41,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:41,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:41,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:41,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:41,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 385 transitions, 4188 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:41,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:41,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:41,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:42,998 INFO L124 PetriNetUnfolderBase]: 4049/9451 cut-off events. [2023-11-29 00:57:42,998 INFO L125 PetriNetUnfolderBase]: For 26257/26257 co-relation queries the response was YES. [2023-11-29 00:57:43,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34964 conditions, 9451 events. 4049/9451 cut-off events. For 26257/26257 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 82851 event pairs, 2546 based on Foata normal form. 209/8931 useless extension candidates. Maximal degree in co-relation 34814. Up to 5931 conditions per place. [2023-11-29 00:57:43,045 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 432 selfloop transitions, 11 changer transitions 3/464 dead transitions. [2023-11-29 00:57:43,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 464 transitions, 5874 flow [2023-11-29 00:57:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:57:43,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:57:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-29 00:57:43,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727848101265823 [2023-11-29 00:57:43,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-29 00:57:43,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-29 00:57:43,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:43,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-29 00:57:43,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:43,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:43,048 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:43,048 INFO L175 Difference]: Start difference. First operand has 176 places, 385 transitions, 4188 flow. Second operand 4 states and 181 transitions. [2023-11-29 00:57:43,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 464 transitions, 5874 flow [2023-11-29 00:57:43,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 464 transitions, 4711 flow, removed 394 selfloop flow, removed 12 redundant places. [2023-11-29 00:57:43,168 INFO L231 Difference]: Finished difference. Result has 168 places, 385 transitions, 3268 flow [2023-11-29 00:57:43,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3268, PETRI_PLACES=168, PETRI_TRANSITIONS=385} [2023-11-29 00:57:43,169 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 93 predicate places. [2023-11-29 00:57:43,169 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 385 transitions, 3268 flow [2023-11-29 00:57:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:43,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:43,170 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] [2023-11-29 00:57:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:57:43,170 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:43,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1752575276, now seen corresponding path program 1 times [2023-11-29 00:57:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540689571] [2023-11-29 00:57:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:57:43,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:43,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540689571] [2023-11-29 00:57:43,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540689571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:43,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775343458] [2023-11-29 00:57:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:43,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:43,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:43,332 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:43,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:57:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:43,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:57:43,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:57:43,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:57:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775343458] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:57:43,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2023-11-29 00:57:43,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843772586] [2023-11-29 00:57:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:43,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:57:43,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:43,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:57:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:57:43,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:43,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 385 transitions, 3268 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:43,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:43,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:43,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:45,364 INFO L124 PetriNetUnfolderBase]: 4041/9423 cut-off events. [2023-11-29 00:57:45,364 INFO L125 PetriNetUnfolderBase]: For 15240/15240 co-relation queries the response was YES. [2023-11-29 00:57:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30983 conditions, 9423 events. 4041/9423 cut-off events. For 15240/15240 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 81665 event pairs, 2546 based on Foata normal form. 8/8712 useless extension candidates. Maximal degree in co-relation 30829. Up to 6224 conditions per place. [2023-11-29 00:57:45,458 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 442 selfloop transitions, 51 changer transitions 5/516 dead transitions. [2023-11-29 00:57:45,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 516 transitions, 5227 flow [2023-11-29 00:57:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:57:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:57:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2023-11-29 00:57:45,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316455696202531 [2023-11-29 00:57:45,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 210 transitions. [2023-11-29 00:57:45,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 210 transitions. [2023-11-29 00:57:45,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:45,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 210 transitions. [2023-11-29 00:57:45,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-11-29 00:57:45,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:45,461 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:45,461 INFO L175 Difference]: Start difference. First operand has 168 places, 385 transitions, 3268 flow. Second operand 5 states and 210 transitions. [2023-11-29 00:57:45,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 516 transitions, 5227 flow [2023-11-29 00:57:45,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 516 transitions, 5207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:57:45,571 INFO L231 Difference]: Finished difference. Result has 170 places, 383 transitions, 3334 flow [2023-11-29 00:57:45,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3334, PETRI_PLACES=170, PETRI_TRANSITIONS=383} [2023-11-29 00:57:45,572 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 95 predicate places. [2023-11-29 00:57:45,572 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 383 transitions, 3334 flow [2023-11-29 00:57:45,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:45,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:45,572 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:45,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:45,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:57:45,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:45,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2137557663, now seen corresponding path program 2 times [2023-11-29 00:57:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827133310] [2023-11-29 00:57:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:45,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:45,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827133310] [2023-11-29 00:57:45,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827133310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:45,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310217457] [2023-11-29 00:57:45,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:45,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:45,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:45,958 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:45,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:57:46,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:57:46,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:46,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:57:46,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:57:46,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:57:46,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310217457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:46,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:46,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2023-11-29 00:57:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386651958] [2023-11-29 00:57:46,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:46,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:57:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:57:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:57:46,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2023-11-29 00:57:46,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 383 transitions, 3334 flow. Second operand has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:46,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:46,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2023-11-29 00:57:46,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:48,657 INFO L124 PetriNetUnfolderBase]: 4221/10119 cut-off events. [2023-11-29 00:57:48,658 INFO L125 PetriNetUnfolderBase]: For 17734/17734 co-relation queries the response was YES. [2023-11-29 00:57:48,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34024 conditions, 10119 events. 4221/10119 cut-off events. For 17734/17734 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 88569 event pairs, 2546 based on Foata normal form. 24/9376 useless extension candidates. Maximal degree in co-relation 33858. Up to 5488 conditions per place. [2023-11-29 00:57:48,708 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 568 selfloop transitions, 120 changer transitions 0/705 dead transitions. [2023-11-29 00:57:48,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 705 transitions, 7532 flow [2023-11-29 00:57:48,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:57:48,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:57:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 465 transitions. [2023-11-29 00:57:48,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924050632911392 [2023-11-29 00:57:48,710 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 465 transitions. [2023-11-29 00:57:48,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 465 transitions. [2023-11-29 00:57:48,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:48,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 465 transitions. [2023-11-29 00:57:48,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 31.0) internal successors, (465), 15 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:48,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 79.0) internal successors, (1264), 16 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:48,712 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 79.0) internal successors, (1264), 16 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:48,713 INFO L175 Difference]: Start difference. First operand has 170 places, 383 transitions, 3334 flow. Second operand 15 states and 465 transitions. [2023-11-29 00:57:48,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 705 transitions, 7532 flow [2023-11-29 00:57:48,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 705 transitions, 7395 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-29 00:57:48,852 INFO L231 Difference]: Finished difference. Result has 177 places, 405 transitions, 3678 flow [2023-11-29 00:57:48,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3678, PETRI_PLACES=177, PETRI_TRANSITIONS=405} [2023-11-29 00:57:48,853 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 102 predicate places. [2023-11-29 00:57:48,853 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 405 transitions, 3678 flow [2023-11-29 00:57:48,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 28.066666666666666) internal successors, (421), 15 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:48,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:48,853 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:57:48,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:49,054 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:49,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:49,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2064640249, now seen corresponding path program 2 times [2023-11-29 00:57:49,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:49,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987636125] [2023-11-29 00:57:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:49,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:49,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987636125] [2023-11-29 00:57:49,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987636125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657783038] [2023-11-29 00:57:49,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:57:49,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:49,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:49,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:49,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:57:49,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:57:49,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:57:49,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:57:49,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 00:57:49,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:57:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 00:57:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657783038] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:57:49,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:57:49,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2023-11-29 00:57:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083856728] [2023-11-29 00:57:49,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:57:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:57:49,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:57:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:57:49,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 79 [2023-11-29 00:57:49,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 405 transitions, 3678 flow. Second operand has 20 states, 20 states have (on average 19.4) internal successors, (388), 20 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:49,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:49,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 79 [2023-11-29 00:57:49,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:52,857 INFO L124 PetriNetUnfolderBase]: 5959/13947 cut-off events. [2023-11-29 00:57:52,858 INFO L125 PetriNetUnfolderBase]: For 26680/26680 co-relation queries the response was YES. [2023-11-29 00:57:52,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48583 conditions, 13947 events. 5959/13947 cut-off events. For 26680/26680 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 128003 event pairs, 3650 based on Foata normal form. 8/12855 useless extension candidates. Maximal degree in co-relation 48440. Up to 6102 conditions per place. [2023-11-29 00:57:52,933 INFO L140 encePairwiseOnDemand]: 63/79 looper letters, 275 selfloop transitions, 319 changer transitions 0/607 dead transitions. [2023-11-29 00:57:52,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 607 transitions, 6773 flow [2023-11-29 00:57:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:57:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 00:57:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 536 transitions. [2023-11-29 00:57:52,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28270042194092826 [2023-11-29 00:57:52,935 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 536 transitions. [2023-11-29 00:57:52,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 536 transitions. [2023-11-29 00:57:52,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:52,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 536 transitions. [2023-11-29 00:57:52,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 22.333333333333332) internal successors, (536), 24 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:52,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 79.0) internal successors, (1975), 25 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:52,938 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 79.0) internal successors, (1975), 25 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:52,938 INFO L175 Difference]: Start difference. First operand has 177 places, 405 transitions, 3678 flow. Second operand 24 states and 536 transitions. [2023-11-29 00:57:52,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 607 transitions, 6773 flow [2023-11-29 00:57:53,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 607 transitions, 6160 flow, removed 71 selfloop flow, removed 15 redundant places. [2023-11-29 00:57:53,109 INFO L231 Difference]: Finished difference. Result has 187 places, 569 transitions, 6151 flow [2023-11-29 00:57:53,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6151, PETRI_PLACES=187, PETRI_TRANSITIONS=569} [2023-11-29 00:57:53,110 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 112 predicate places. [2023-11-29 00:57:53,110 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 569 transitions, 6151 flow [2023-11-29 00:57:53,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.4) internal successors, (388), 20 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:53,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:53,111 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] [2023-11-29 00:57:53,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:57:53,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:53,311 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:53,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:53,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1058155185, now seen corresponding path program 1 times [2023-11-29 00:57:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:53,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036235152] [2023-11-29 00:57:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:53,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:57:53,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036235152] [2023-11-29 00:57:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036235152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:57:53,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031202181] [2023-11-29 00:57:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:53,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:53,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:57:53,569 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:57:53,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:57:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:53,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:57:53,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:57:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:57:53,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:57:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031202181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:53,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:57:53,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-11-29 00:57:53,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599223700] [2023-11-29 00:57:53,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:53,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:57:53,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:53,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:57:53,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:57:53,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:53,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 569 transitions, 6151 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:53,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:53,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:53,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:56,817 INFO L124 PetriNetUnfolderBase]: 5419/13172 cut-off events. [2023-11-29 00:57:56,817 INFO L125 PetriNetUnfolderBase]: For 35937/35937 co-relation queries the response was YES. [2023-11-29 00:57:56,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50861 conditions, 13172 events. 5419/13172 cut-off events. For 35937/35937 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 121730 event pairs, 3239 based on Foata normal form. 0/12333 useless extension candidates. Maximal degree in co-relation 45637. Up to 10991 conditions per place. [2023-11-29 00:57:56,882 INFO L140 encePairwiseOnDemand]: 77/79 looper letters, 551 selfloop transitions, 1 changer transitions 0/568 dead transitions. [2023-11-29 00:57:56,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 568 transitions, 7249 flow [2023-11-29 00:57:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:57:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:57:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-29 00:57:56,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274261603375527 [2023-11-29 00:57:56,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-29 00:57:56,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-29 00:57:56,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:56,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-29 00:57:56,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:56,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:56,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:56,884 INFO L175 Difference]: Start difference. First operand has 187 places, 569 transitions, 6151 flow. Second operand 3 states and 125 transitions. [2023-11-29 00:57:56,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 568 transitions, 7249 flow [2023-11-29 00:57:57,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 568 transitions, 7217 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-29 00:57:57,111 INFO L231 Difference]: Finished difference. Result has 181 places, 568 transitions, 6115 flow [2023-11-29 00:57:57,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6115, PETRI_PLACES=181, PETRI_TRANSITIONS=568} [2023-11-29 00:57:57,112 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 106 predicate places. [2023-11-29 00:57:57,112 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 568 transitions, 6115 flow [2023-11-29 00:57:57,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:57,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:57,112 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] [2023-11-29 00:57:57,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:57:57,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:57:57,313 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:57:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1058155187, now seen corresponding path program 1 times [2023-11-29 00:57:57,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:57,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049124011] [2023-11-29 00:57:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:57,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:57:57,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:57,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049124011] [2023-11-29 00:57:57,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049124011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:57,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:57,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:57:57,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189742573] [2023-11-29 00:57:57,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:57,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:57:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:57,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:57:57,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:57:57,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:57:57,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 568 transitions, 6115 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:57,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:57,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:57:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:58:01,116 INFO L124 PetriNetUnfolderBase]: 8736/18277 cut-off events. [2023-11-29 00:58:01,116 INFO L125 PetriNetUnfolderBase]: For 40476/40645 co-relation queries the response was YES. [2023-11-29 00:58:01,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64307 conditions, 18277 events. 8736/18277 cut-off events. For 40476/40645 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 160268 event pairs, 1981 based on Foata normal form. 136/17158 useless extension candidates. Maximal degree in co-relation 64268. Up to 8544 conditions per place. [2023-11-29 00:58:01,212 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 574 selfloop transitions, 6 changer transitions 6/602 dead transitions. [2023-11-29 00:58:01,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 602 transitions, 7397 flow [2023-11-29 00:58:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:58:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2023-11-29 00:58:01,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075949367088608 [2023-11-29 00:58:01,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 192 transitions. [2023-11-29 00:58:01,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 192 transitions. [2023-11-29 00:58:01,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:58:01,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 192 transitions. [2023-11-29 00:58:01,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:01,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:01,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:01,215 INFO L175 Difference]: Start difference. First operand has 181 places, 568 transitions, 6115 flow. Second operand 4 states and 192 transitions. [2023-11-29 00:58:01,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 602 transitions, 7397 flow [2023-11-29 00:58:01,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 602 transitions, 7396 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:58:01,438 INFO L231 Difference]: Finished difference. Result has 186 places, 572 transitions, 6174 flow [2023-11-29 00:58:01,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6114, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6174, PETRI_PLACES=186, PETRI_TRANSITIONS=572} [2023-11-29 00:58:01,439 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 111 predicate places. [2023-11-29 00:58:01,439 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 572 transitions, 6174 flow [2023-11-29 00:58:01,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:01,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:58:01,440 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] [2023-11-29 00:58:01,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:58:01,440 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:58:01,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash -528705503, now seen corresponding path program 1 times [2023-11-29 00:58:01,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:01,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333550085] [2023-11-29 00:58:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:01,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:01,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:01,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333550085] [2023-11-29 00:58:01,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333550085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:58:01,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351307322] [2023-11-29 00:58:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:01,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:01,541 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:58:01,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:58:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:01,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:58:01,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:01,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:58:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351307322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:01,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:58:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-29 00:58:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771786258] [2023-11-29 00:58:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:01,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:58:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:58:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:58:01,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:58:01,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 572 transitions, 6174 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:01,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:58:01,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:58:01,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:58:05,496 INFO L124 PetriNetUnfolderBase]: 8499/17650 cut-off events. [2023-11-29 00:58:05,497 INFO L125 PetriNetUnfolderBase]: For 49286/49733 co-relation queries the response was YES. [2023-11-29 00:58:05,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66695 conditions, 17650 events. 8499/17650 cut-off events. For 49286/49733 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 151554 event pairs, 2107 based on Foata normal form. 738/17676 useless extension candidates. Maximal degree in co-relation 66652. Up to 9588 conditions per place. [2023-11-29 00:58:05,607 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 563 selfloop transitions, 8 changer transitions 0/587 dead transitions. [2023-11-29 00:58:05,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 587 transitions, 7372 flow [2023-11-29 00:58:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:58:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:58:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2023-11-29 00:58:05,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443037974683544 [2023-11-29 00:58:05,608 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 172 transitions. [2023-11-29 00:58:05,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 172 transitions. [2023-11-29 00:58:05,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:58:05,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 172 transitions. [2023-11-29 00:58:05,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:05,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:05,609 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:05,609 INFO L175 Difference]: Start difference. First operand has 186 places, 572 transitions, 6174 flow. Second operand 4 states and 172 transitions. [2023-11-29 00:58:05,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 587 transitions, 7372 flow [2023-11-29 00:58:05,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 587 transitions, 7366 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 00:58:05,880 INFO L231 Difference]: Finished difference. Result has 188 places, 573 transitions, 6221 flow [2023-11-29 00:58:05,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6221, PETRI_PLACES=188, PETRI_TRANSITIONS=573} [2023-11-29 00:58:05,881 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 113 predicate places. [2023-11-29 00:58:05,881 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 573 transitions, 6221 flow [2023-11-29 00:58:05,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:05,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:58:05,882 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] [2023-11-29 00:58:05,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:58:06,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:06,082 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:58:06,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash -528705502, now seen corresponding path program 1 times [2023-11-29 00:58:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:06,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227630007] [2023-11-29 00:58:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:06,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:58:06,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:06,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227630007] [2023-11-29 00:58:06,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227630007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:58:06,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88143205] [2023-11-29 00:58:06,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:06,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:06,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:06,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:58:06,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:58:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:06,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:58:06,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:06,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:58:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88143205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:58:06,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:58:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-11-29 00:58:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069854005] [2023-11-29 00:58:06,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:58:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:58:06,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:58:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:58:06,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:58:06,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 573 transitions, 6221 flow. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:06,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:58:06,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:58:06,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:58:12,514 INFO L124 PetriNetUnfolderBase]: 12425/26380 cut-off events. [2023-11-29 00:58:12,514 INFO L125 PetriNetUnfolderBase]: For 100334/101198 co-relation queries the response was YES. [2023-11-29 00:58:12,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99853 conditions, 26380 events. 12425/26380 cut-off events. For 100334/101198 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 247636 event pairs, 4861 based on Foata normal form. 1536/27681 useless extension candidates. Maximal degree in co-relation 99807. Up to 9652 conditions per place. [2023-11-29 00:58:12,703 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 704 selfloop transitions, 163 changer transitions 9/889 dead transitions. [2023-11-29 00:58:12,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 889 transitions, 11206 flow [2023-11-29 00:58:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:58:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:58:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2023-11-29 00:58:12,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379746835443038 [2023-11-29 00:58:12,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 270 transitions. [2023-11-29 00:58:12,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 270 transitions. [2023-11-29 00:58:12,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:58:12,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 270 transitions. [2023-11-29 00:58:12,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:12,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:12,706 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:12,706 INFO L175 Difference]: Start difference. First operand has 188 places, 573 transitions, 6221 flow. Second operand 9 states and 270 transitions. [2023-11-29 00:58:12,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 889 transitions, 11206 flow [2023-11-29 00:58:13,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 889 transitions, 11174 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-29 00:58:13,148 INFO L231 Difference]: Finished difference. Result has 194 places, 668 transitions, 8259 flow [2023-11-29 00:58:13,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6174, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8259, PETRI_PLACES=194, PETRI_TRANSITIONS=668} [2023-11-29 00:58:13,149 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 119 predicate places. [2023-11-29 00:58:13,149 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 668 transitions, 8259 flow [2023-11-29 00:58:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:13,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:58:13,149 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:13,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:58:13,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:13,350 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:58:13,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:13,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1522178861, now seen corresponding path program 1 times [2023-11-29 00:58:13,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:13,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561962497] [2023-11-29 00:58:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:13,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561962497] [2023-11-29 00:58:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561962497] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:58:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213584209] [2023-11-29 00:58:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:13,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:13,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:13,466 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:58:13,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:58:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:13,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:58:13,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:13,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:58:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:13,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213584209] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:58:13,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:58:13,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-29 00:58:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945818232] [2023-11-29 00:58:13,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:58:13,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:58:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:58:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:58:13,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:58:13,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 668 transitions, 8259 flow. Second operand has 9 states, 9 states have (on average 34.666666666666664) internal successors, (312), 9 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:13,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:58:13,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:58:13,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:58:22,455 INFO L124 PetriNetUnfolderBase]: 18707/36362 cut-off events. [2023-11-29 00:58:22,456 INFO L125 PetriNetUnfolderBase]: For 130328/131238 co-relation queries the response was YES. [2023-11-29 00:58:22,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136508 conditions, 36362 events. 18707/36362 cut-off events. For 130328/131238 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 329689 event pairs, 1617 based on Foata normal form. 1936/38048 useless extension candidates. Maximal degree in co-relation 136460. Up to 9991 conditions per place. [2023-11-29 00:58:22,775 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 708 selfloop transitions, 21 changer transitions 0/745 dead transitions. [2023-11-29 00:58:22,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 745 transitions, 10053 flow [2023-11-29 00:58:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:58:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:58:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 335 transitions. [2023-11-29 00:58:22,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300632911392406 [2023-11-29 00:58:22,777 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 335 transitions. [2023-11-29 00:58:22,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 335 transitions. [2023-11-29 00:58:22,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:58:22,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 335 transitions. [2023-11-29 00:58:22,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.875) internal successors, (335), 8 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:22,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:22,778 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:22,778 INFO L175 Difference]: Start difference. First operand has 194 places, 668 transitions, 8259 flow. Second operand 8 states and 335 transitions. [2023-11-29 00:58:22,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 745 transitions, 10053 flow [2023-11-29 00:58:23,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 745 transitions, 9969 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-29 00:58:23,365 INFO L231 Difference]: Finished difference. Result has 201 places, 684 transitions, 8429 flow [2023-11-29 00:58:23,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=8175, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8429, PETRI_PLACES=201, PETRI_TRANSITIONS=684} [2023-11-29 00:58:23,366 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 126 predicate places. [2023-11-29 00:58:23,366 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 684 transitions, 8429 flow [2023-11-29 00:58:23,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.666666666666664) internal successors, (312), 9 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:23,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:58:23,366 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2023-11-29 00:58:23,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:58:23,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:58:23,567 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:58:23,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash -833935387, now seen corresponding path program 2 times [2023-11-29 00:58:23,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:23,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923622417] [2023-11-29 00:58:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:24,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923622417] [2023-11-29 00:58:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923622417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:58:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091212705] [2023-11-29 00:58:24,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:58:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:24,042 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:58:24,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:58:24,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:58:24,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:58:24,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:58:24,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 00:58:24,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:58:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 00:58:24,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091212705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:58:24,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:58:24,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2023-11-29 00:58:24,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202418111] [2023-11-29 00:58:24,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:58:24,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 00:58:24,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 00:58:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:58:24,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:58:24,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 684 transitions, 8429 flow. Second operand has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:24,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:58:24,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:58:24,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:58:34,929 INFO L124 PetriNetUnfolderBase]: 18772/36930 cut-off events. [2023-11-29 00:58:34,929 INFO L125 PetriNetUnfolderBase]: For 187472/188432 co-relation queries the response was YES. [2023-11-29 00:58:35,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150791 conditions, 36930 events. 18772/36930 cut-off events. For 187472/188432 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 336193 event pairs, 10541 based on Foata normal form. 348/37042 useless extension candidates. Maximal degree in co-relation 150737. Up to 27061 conditions per place. [2023-11-29 00:58:35,309 INFO L140 encePairwiseOnDemand]: 62/79 looper letters, 117 selfloop transitions, 593 changer transitions 0/723 dead transitions. [2023-11-29 00:58:35,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 723 transitions, 10308 flow [2023-11-29 00:58:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 00:58:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-29 00:58:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1335 transitions. [2023-11-29 00:58:35,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29646902065289804 [2023-11-29 00:58:35,313 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1335 transitions. [2023-11-29 00:58:35,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1335 transitions. [2023-11-29 00:58:35,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:58:35,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1335 transitions. [2023-11-29 00:58:35,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 23.42105263157895) internal successors, (1335), 57 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:35,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 79.0) internal successors, (4582), 58 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:35,323 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 79.0) internal successors, (4582), 58 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:35,323 INFO L175 Difference]: Start difference. First operand has 201 places, 684 transitions, 8429 flow. Second operand 57 states and 1335 transitions. [2023-11-29 00:58:35,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 723 transitions, 10308 flow [2023-11-29 00:58:36,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 723 transitions, 10268 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-29 00:58:36,331 INFO L231 Difference]: Finished difference. Result has 258 places, 723 transitions, 10158 flow [2023-11-29 00:58:36,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=8363, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=10158, PETRI_PLACES=258, PETRI_TRANSITIONS=723} [2023-11-29 00:58:36,332 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 183 predicate places. [2023-11-29 00:58:36,333 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 723 transitions, 10158 flow [2023-11-29 00:58:36,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 21.096774193548388) internal successors, (654), 31 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:36,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:58:36,333 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1] [2023-11-29 00:58:36,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:58:36,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:58:36,533 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:58:36,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:36,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1850208968, now seen corresponding path program 1 times [2023-11-29 00:58:36,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:36,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85913051] [2023-11-29 00:58:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:36,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85913051] [2023-11-29 00:58:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85913051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:58:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941312704] [2023-11-29 00:58:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:37,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:37,084 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:58:37,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:58:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:37,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:58:37,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:37,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:58:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941312704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:58:38,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:58:38,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 59 [2023-11-29 00:58:38,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079242316] [2023-11-29 00:58:38,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:58:38,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-29 00:58:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-29 00:58:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 00:58:38,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:58:38,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 723 transitions, 10158 flow. Second operand has 60 states, 60 states have (on average 21.05) internal successors, (1263), 60 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:38,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:58:38,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:58:38,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:58:52,105 INFO L124 PetriNetUnfolderBase]: 21097/46230 cut-off events. [2023-11-29 00:58:52,105 INFO L125 PetriNetUnfolderBase]: For 504589/505549 co-relation queries the response was YES. [2023-11-29 00:58:52,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217672 conditions, 46230 events. 21097/46230 cut-off events. For 504589/505549 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 435277 event pairs, 10541 based on Foata normal form. 2472/48466 useless extension candidates. Maximal degree in co-relation 217614. Up to 29351 conditions per place. [2023-11-29 00:58:52,576 INFO L140 encePairwiseOnDemand]: 63/79 looper letters, 122 selfloop transitions, 1188 changer transitions 0/1323 dead transitions. [2023-11-29 00:58:52,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1323 transitions, 21253 flow [2023-11-29 00:58:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 00:58:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-29 00:58:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1561 transitions. [2023-11-29 00:58:52,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34068092536010475 [2023-11-29 00:58:52,579 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1561 transitions. [2023-11-29 00:58:52,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1561 transitions. [2023-11-29 00:58:52,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:58:52,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1561 transitions. [2023-11-29 00:58:52,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 26.913793103448278) internal successors, (1561), 58 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:52,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 79.0) internal successors, (4661), 59 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:52,587 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 79.0) internal successors, (4661), 59 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:52,587 INFO L175 Difference]: Start difference. First operand has 258 places, 723 transitions, 10158 flow. Second operand 58 states and 1561 transitions. [2023-11-29 00:58:52,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1323 transitions, 21253 flow [2023-11-29 00:58:53,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1323 transitions, 19945 flow, removed 156 selfloop flow, removed 25 redundant places. [2023-11-29 00:58:53,851 INFO L231 Difference]: Finished difference. Result has 305 places, 1323 transitions, 20167 flow [2023-11-29 00:58:53,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=9075, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=626, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=20167, PETRI_PLACES=305, PETRI_TRANSITIONS=1323} [2023-11-29 00:58:53,852 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 230 predicate places. [2023-11-29 00:58:53,852 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 1323 transitions, 20167 flow [2023-11-29 00:58:53,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 21.05) internal successors, (1263), 60 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:53,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:58:53,852 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:53,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 00:58:54,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:58:54,053 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:58:54,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 533270655, now seen corresponding path program 2 times [2023-11-29 00:58:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396519918] [2023-11-29 00:58:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:54,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396519918] [2023-11-29 00:58:54,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396519918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:58:54,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538608728] [2023-11-29 00:58:54,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:58:54,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:58:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:58:54,212 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:58:54,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:58:54,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:58:54,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:58:54,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:58:54,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:58:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:54,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:58:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:58:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538608728] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:58:54,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:58:54,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 00:58:54,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802799839] [2023-11-29 00:58:54,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:58:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:58:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:58:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:58:54,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 00:58:54,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 1323 transitions, 20167 flow. Second operand has 17 states, 17 states have (on average 32.94117647058823) internal successors, (560), 17 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:54,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:58:54,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 00:58:54,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:59:30,169 INFO L124 PetriNetUnfolderBase]: 56215/101948 cut-off events. [2023-11-29 00:59:30,169 INFO L125 PetriNetUnfolderBase]: For 620032/621864 co-relation queries the response was YES. [2023-11-29 00:59:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406227 conditions, 101948 events. 56215/101948 cut-off events. For 620032/621864 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 935565 event pairs, 3819 based on Foata normal form. 4700/105348 useless extension candidates. Maximal degree in co-relation 406155. Up to 19759 conditions per place. [2023-11-29 00:59:31,732 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 1428 selfloop transitions, 90 changer transitions 0/1533 dead transitions. [2023-11-29 00:59:31,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1533 transitions, 24352 flow [2023-11-29 00:59:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:59:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 00:59:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 663 transitions. [2023-11-29 00:59:31,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245253164556962 [2023-11-29 00:59:31,734 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 663 transitions. [2023-11-29 00:59:31,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 663 transitions. [2023-11-29 00:59:31,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:59:31,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 663 transitions. [2023-11-29 00:59:31,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 41.4375) internal successors, (663), 16 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) [2023-11-29 00:59:31,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 79.0) internal successors, (1343), 17 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:31,738 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 79.0) internal successors, (1343), 17 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:31,738 INFO L175 Difference]: Start difference. First operand has 305 places, 1323 transitions, 20167 flow. Second operand 16 states and 663 transitions. [2023-11-29 00:59:31,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1533 transitions, 24352 flow [2023-11-29 00:59:34,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1533 transitions, 20398 flow, removed 1349 selfloop flow, removed 28 redundant places. [2023-11-29 00:59:34,922 INFO L231 Difference]: Finished difference. Result has 306 places, 1393 transitions, 17348 flow [2023-11-29 00:59:34,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=16213, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=17348, PETRI_PLACES=306, PETRI_TRANSITIONS=1393} [2023-11-29 00:59:34,924 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 231 predicate places. [2023-11-29 00:59:34,924 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1393 transitions, 17348 flow [2023-11-29 00:59:34,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 32.94117647058823) internal successors, (560), 17 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:34,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:59:34,924 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:59:34,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:59:35,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 00:59:35,125 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 00:59:35,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:59:35,125 INFO L85 PathProgramCache]: Analyzing trace with hash 868343767, now seen corresponding path program 3 times [2023-11-29 00:59:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:59:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591819450] [2023-11-29 00:59:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:59:35,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:59:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:59:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:59:35,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:59:35,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591819450] [2023-11-29 00:59:35,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591819450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:59:35,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522262789] [2023-11-29 00:59:35,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:59:35,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:59:35,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:59:35,641 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:59:35,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:59:36,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:59:36,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:59:36,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:59:36,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:59:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-29 00:59:36,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:59:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-29 00:59:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522262789] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:59:36,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:59:36,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 25 [2023-11-29 00:59:36,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155159398] [2023-11-29 00:59:36,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:59:36,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:59:36,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:59:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:59:36,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:59:36,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 00:59:36,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1393 transitions, 17348 flow. Second operand has 26 states, 26 states have (on average 23.384615384615383) internal successors, (608), 26 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:59:36,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:59:36,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 00:59:36,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:00:22,194 INFO L124 PetriNetUnfolderBase]: 74161/129890 cut-off events. [2023-11-29 01:00:22,194 INFO L125 PetriNetUnfolderBase]: For 1026913/1028102 co-relation queries the response was YES. [2023-11-29 01:00:24,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516028 conditions, 129890 events. 74161/129890 cut-off events. For 1026913/1028102 co-relation queries the response was YES. Maximal size of possible extension queue 1671. Compared 1155335 event pairs, 4971 based on Foata normal form. 2276/130159 useless extension candidates. Maximal degree in co-relation 515943. Up to 24931 conditions per place. [2023-11-29 01:00:24,686 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 1305 selfloop transitions, 815 changer transitions 36/2169 dead transitions. [2023-11-29 01:00:24,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 2169 transitions, 29063 flow [2023-11-29 01:00:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:00:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 01:00:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 757 transitions. [2023-11-29 01:00:24,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992616033755274 [2023-11-29 01:00:24,688 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 757 transitions. [2023-11-29 01:00:24,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 757 transitions. [2023-11-29 01:00:24,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:00:24,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 757 transitions. [2023-11-29 01:00:24,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 31.541666666666668) internal successors, (757), 24 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:24,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 79.0) internal successors, (1975), 25 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:24,692 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 79.0) internal successors, (1975), 25 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:24,693 INFO L175 Difference]: Start difference. First operand has 306 places, 1393 transitions, 17348 flow. Second operand 24 states and 757 transitions. [2023-11-29 01:00:24,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 2169 transitions, 29063 flow [2023-11-29 01:00:29,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 2169 transitions, 28026 flow, removed 516 selfloop flow, removed 1 redundant places. [2023-11-29 01:00:29,178 INFO L231 Difference]: Finished difference. Result has 343 places, 1617 transitions, 22215 flow [2023-11-29 01:00:29,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=17157, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=594, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=22215, PETRI_PLACES=343, PETRI_TRANSITIONS=1617} [2023-11-29 01:00:29,180 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 268 predicate places. [2023-11-29 01:00:29,180 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 1617 transitions, 22215 flow [2023-11-29 01:00:29,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 23.384615384615383) internal successors, (608), 26 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:29,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:00:29,180 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:00:29,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:00:29,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:00:29,381 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 01:00:29,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:00:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1987223247, now seen corresponding path program 4 times [2023-11-29 01:00:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:00:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141870878] [2023-11-29 01:00:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:00:29,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:00:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:00:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:00:29,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:00:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141870878] [2023-11-29 01:00:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141870878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:00:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045603180] [2023-11-29 01:00:29,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:00:29,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:00:29,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:00:29,868 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:00:29,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:00:30,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:00:30,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:00:30,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:00:30,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:00:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:00:30,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:00:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:00:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045603180] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:00:30,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:00:30,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-29 01:00:30,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639665339] [2023-11-29 01:00:30,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:00:30,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:00:30,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:00:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:00:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:00:30,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 79 [2023-11-29 01:00:30,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 1617 transitions, 22215 flow. Second operand has 35 states, 35 states have (on average 31.942857142857143) internal successors, (1118), 35 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:00:30,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:00:30,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 79 [2023-11-29 01:00:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:01:44,902 INFO L124 PetriNetUnfolderBase]: 104070/177177 cut-off events. [2023-11-29 01:01:44,902 INFO L125 PetriNetUnfolderBase]: For 3356573/3357927 co-relation queries the response was YES. [2023-11-29 01:01:48,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692061 conditions, 177177 events. 104070/177177 cut-off events. For 3356573/3357927 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 1541970 event pairs, 6570 based on Foata normal form. 4858/179327 useless extension candidates. Maximal degree in co-relation 691960. Up to 35257 conditions per place. [2023-11-29 01:01:49,008 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 1611 selfloop transitions, 432 changer transitions 0/2058 dead transitions. [2023-11-29 01:01:49,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 2058 transitions, 28857 flow [2023-11-29 01:01:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 01:01:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-29 01:01:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1401 transitions. [2023-11-29 01:01:49,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215934475055846 [2023-11-29 01:01:49,011 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1401 transitions. [2023-11-29 01:01:49,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1401 transitions. [2023-11-29 01:01:49,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:01:49,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1401 transitions. [2023-11-29 01:01:49,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 41.205882352941174) internal successors, (1401), 34 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:49,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 79.0) internal successors, (2765), 35 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:49,017 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 79.0) internal successors, (2765), 35 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:49,017 INFO L175 Difference]: Start difference. First operand has 343 places, 1617 transitions, 22215 flow. Second operand 34 states and 1401 transitions. [2023-11-29 01:01:49,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 2058 transitions, 28857 flow [2023-11-29 01:01:57,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 2058 transitions, 28083 flow, removed 301 selfloop flow, removed 9 redundant places. [2023-11-29 01:01:57,937 INFO L231 Difference]: Finished difference. Result has 396 places, 1738 transitions, 24865 flow [2023-11-29 01:01:57,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=21683, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=24865, PETRI_PLACES=396, PETRI_TRANSITIONS=1738} [2023-11-29 01:01:57,938 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 321 predicate places. [2023-11-29 01:01:57,938 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1738 transitions, 24865 flow [2023-11-29 01:01:57,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 31.942857142857143) internal successors, (1118), 35 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:57,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:57,939 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 29, 28, 1, 1, 1, 1] [2023-11-29 01:01:57,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:01:58,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:01:58,139 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 01:01:58,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1094981973, now seen corresponding path program 2 times [2023-11-29 01:01:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748697863] [2023-11-29 01:01:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:58,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:00,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748697863] [2023-11-29 01:02:00,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748697863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:00,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580596652] [2023-11-29 01:02:00,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:02:00,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:00,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:00,138 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:00,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:02:00,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:02:00,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:02:00,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:02:00,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2023-11-29 01:02:00,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1162 trivial. 0 not checked. [2023-11-29 01:02:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580596652] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:00,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:00,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 3, 3] total 62 [2023-11-29 01:02:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931169763] [2023-11-29 01:02:00,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:00,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-29 01:02:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:00,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-29 01:02:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 01:02:00,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 01:02:00,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1738 transitions, 24865 flow. Second operand has 63 states, 63 states have (on average 21.07936507936508) internal successors, (1328), 63 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:00,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:00,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 01:02:00,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:03:42,818 INFO L124 PetriNetUnfolderBase]: 104180/182762 cut-off events. [2023-11-29 01:03:42,819 INFO L125 PetriNetUnfolderBase]: For 1508945/1516145 co-relation queries the response was YES. [2023-11-29 01:03:47,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744876 conditions, 182762 events. 104180/182762 cut-off events. For 1508945/1516145 co-relation queries the response was YES. Maximal size of possible extension queue 1785. Compared 1646664 event pairs, 64333 based on Foata normal form. 2152/184748 useless extension candidates. Maximal degree in co-relation 744747. Up to 144887 conditions per place. [2023-11-29 01:03:48,061 INFO L140 encePairwiseOnDemand]: 63/79 looper letters, 519 selfloop transitions, 1245 changer transitions 0/1777 dead transitions. [2023-11-29 01:03:48,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1777 transitions, 28887 flow [2023-11-29 01:03:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-11-29 01:03:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2023-11-29 01:03:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 2805 transitions. [2023-11-29 01:03:48,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29344073647871116 [2023-11-29 01:03:48,067 INFO L72 ComplementDD]: Start complementDD. Operand 121 states and 2805 transitions. [2023-11-29 01:03:48,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 2805 transitions. [2023-11-29 01:03:48,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:03:48,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 121 states and 2805 transitions. [2023-11-29 01:03:48,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 122 states, 121 states have (on average 23.181818181818183) internal successors, (2805), 121 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:48,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 122 states, 122 states have (on average 79.0) internal successors, (9638), 122 states have internal predecessors, (9638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:48,084 INFO L81 ComplementDD]: Finished complementDD. Result has 122 states, 122 states have (on average 79.0) internal successors, (9638), 122 states have internal predecessors, (9638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:48,084 INFO L175 Difference]: Start difference. First operand has 396 places, 1738 transitions, 24865 flow. Second operand 121 states and 2805 transitions. [2023-11-29 01:03:48,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1777 transitions, 28887 flow [2023-11-29 01:04:04,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1777 transitions, 27732 flow, removed 269 selfloop flow, removed 15 redundant places. [2023-11-29 01:04:04,732 INFO L231 Difference]: Finished difference. Result has 502 places, 1777 transitions, 26789 flow [2023-11-29 01:04:04,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=23652, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=121, PETRI_FLOW=26789, PETRI_PLACES=502, PETRI_TRANSITIONS=1777} [2023-11-29 01:04:04,734 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 427 predicate places. [2023-11-29 01:04:04,735 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 1777 transitions, 26789 flow [2023-11-29 01:04:04,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 21.07936507936508) internal successors, (1328), 63 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:04,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:04:04,735 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 29, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:04,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:04:04,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:04,936 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 01:04:04,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1748079046, now seen corresponding path program 1 times [2023-11-29 01:04:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800599611] [2023-11-29 01:04:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:06,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:06,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800599611] [2023-11-29 01:04:06,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800599611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:06,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000990871] [2023-11-29 01:04:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:06,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:06,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:06,692 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:06,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e01b82ab-4461-47bd-840c-c6f4ac47b346/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:04:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:07,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 01:04:07,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:07,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:04:09,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000990871] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:09,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:04:09,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 123 [2023-11-29 01:04:09,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534639812] [2023-11-29 01:04:09,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:09,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2023-11-29 01:04:09,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:09,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2023-11-29 01:04:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2023-11-29 01:04:10,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2023-11-29 01:04:10,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1777 transitions, 26789 flow. Second operand has 124 states, 124 states have (on average 21.048387096774192) internal successors, (2610), 124 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:10,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:04:10,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2023-11-29 01:04:10,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand