./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme --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 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:52:19,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:52:19,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:52:19,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:52:19,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:52:20,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:52:20,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:52:20,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:52:20,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:52:20,021 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:52:20,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:52:20,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:52:20,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:52:20,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:52:20,024 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:52:20,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:52:20,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:52:20,026 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:52:20,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:52:20,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:52:20,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:52:20,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:52:20,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:52:20,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:52:20,032 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:52:20,032 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:52:20,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:52:20,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:52:20,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:52:20,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:52:20,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:52:20,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:52:20,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:52:20,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:20,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:52:20,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:52:20,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:52:20,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:52:20,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:52:20,046 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:52:20,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:52:20,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:52:20,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:52:20,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:52:20,049 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_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a6d4c6573ed55a0a96a38de6d1424f0a577970a6c88cea50d5cb9a315d791fd [2023-11-26 11:52:20,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:52:20,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:52:20,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:52:20,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:52:20,322 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:52:20,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2023-11-26 11:52:23,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:23,799 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:23,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/sv-benchmarks/c/goblint-regression/05-lval_ls_02-idx_nr.i [2023-11-26 11:52:23,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/data/0a311934f/19e3340462f542b0a67f5f12883444d8/FLAGc8ae9e3cd [2023-11-26 11:52:23,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/data/0a311934f/19e3340462f542b0a67f5f12883444d8 [2023-11-26 11:52:23,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:23,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:23,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:23,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:23,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:23,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:23" (1/1) ... [2023-11-26 11:52:23,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307222c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:23, skipping insertion in model container [2023-11-26 11:52:23,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:23" (1/1) ... [2023-11-26 11:52:23,915 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:24,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:24,352 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:24,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:24,431 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:24,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24 WrapperNode [2023-11-26 11:52:24,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:24,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:24,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:24,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:24,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,475 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-11-26 11:52:24,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:24,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:24,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:24,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:24,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,504 INFO L175 MemorySlicer]: Split 2 memory accesses to 2 slices as follows [1, 1]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2023-11-26 11:52:24,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:24,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:24,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:24,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:24,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (1/1) ... [2023-11-26 11:52:24,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:24,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:24,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:24,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:52:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:52:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:52:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:52:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:52:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:52:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:52:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:52:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:24,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:24,599 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:52:24,728 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:24,730 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:24,882 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:24,966 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:24,966 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:52:24,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:24 BoogieIcfgContainer [2023-11-26 11:52:24,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:24,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:24,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:24,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:24,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:23" (1/3) ... [2023-11-26 11:52:24,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16711161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:24, skipping insertion in model container [2023-11-26 11:52:24,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:24" (2/3) ... [2023-11-26 11:52:24,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16711161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:24, skipping insertion in model container [2023-11-26 11:52:24,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:24" (3/3) ... [2023-11-26 11:52:24,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2023-11-26 11:52:24,996 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:52:25,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:25,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 11:52:25,008 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:52:25,065 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:52:25,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2023-11-26 11:52:25,153 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2023-11-26 11:52:25,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:52:25,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2023-11-26 11:52:25,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2023-11-26 11:52:25,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2023-11-26 11:52:25,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:25,198 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;@72bcbfed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:25,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-26 11:52:25,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:52:25,202 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:52:25,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:52:25,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:25,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:52:25,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:25,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:25,210 INFO L85 PathProgramCache]: Analyzing trace with hash 166860, now seen corresponding path program 1 times [2023-11-26 11:52:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:25,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508211038] [2023-11-26 11:52:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:25,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:25,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:25,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508211038] [2023-11-26 11:52:25,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508211038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:25,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185998145] [2023-11-26 11:52:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:25,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:25,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:25,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:25,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:25,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:25,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:25,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:25,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:25,705 INFO L124 PetriNetUnfolderBase]: 31/104 cut-off events. [2023-11-26 11:52:25,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:52:25,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 104 events. 31/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 348 event pairs, 30 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 164. Up to 79 conditions per place. [2023-11-26 11:52:25,708 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 17 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-11-26 11:52:25,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 99 flow [2023-11-26 11:52:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:52:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2023-11-26 11:52:25,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2023-11-26 11:52:25,723 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 59 transitions. [2023-11-26 11:52:25,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 59 transitions. [2023-11-26 11:52:25,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:25,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 59 transitions. [2023-11-26 11:52:25,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:25,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:25,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:25,736 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 59 transitions. [2023-11-26 11:52:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 99 flow [2023-11-26 11:52:25,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:52:25,742 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2023-11-26 11:52:25,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-11-26 11:52:25,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-11-26 11:52:25,749 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2023-11-26 11:52:25,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:25,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:25,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:52:25,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:52:25,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:25,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 676119097, now seen corresponding path program 1 times [2023-11-26 11:52:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:25,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402283783] [2023-11-26 11:52:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:25,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:25,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402283783] [2023-11-26 11:52:25,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402283783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:25,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651909699] [2023-11-26 11:52:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:25,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:25,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:25,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:25,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:25,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:52:26,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:26,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651909699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:26,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:52:26,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655233098] [2023-11-26 11:52:26,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:26,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:26,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:26,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:26,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:26,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:26,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:26,264 INFO L124 PetriNetUnfolderBase]: 31/103 cut-off events. [2023-11-26 11:52:26,264 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:52:26,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 103 events. 31/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 344 event pairs, 30 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 181. Up to 74 conditions per place. [2023-11-26 11:52:26,268 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 13 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-11-26 11:52:26,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 112 flow [2023-11-26 11:52:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:52:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2023-11-26 11:52:26,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2023-11-26 11:52:26,274 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 74 transitions. [2023-11-26 11:52:26,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 74 transitions. [2023-11-26 11:52:26,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:26,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 74 transitions. [2023-11-26 11:52:26,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,285 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 74 transitions. [2023-11-26 11:52:26,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 112 flow [2023-11-26 11:52:26,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:52:26,287 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2023-11-26 11:52:26,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-11-26 11:52:26,288 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-11-26 11:52:26,288 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2023-11-26 11:52:26,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:26,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:52:26,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:26,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:26,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash -515144312, now seen corresponding path program 1 times [2023-11-26 11:52:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:26,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220966617] [2023-11-26 11:52:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:52:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220966617] [2023-11-26 11:52:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220966617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199003767] [2023-11-26 11:52:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:26,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:26,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:26,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:26,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:26,685 INFO L124 PetriNetUnfolderBase]: 31/102 cut-off events. [2023-11-26 11:52:26,686 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:52:26,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 102 events. 31/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 338 event pairs, 30 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 177. Up to 77 conditions per place. [2023-11-26 11:52:26,688 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 14 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2023-11-26 11:52:26,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 116 flow [2023-11-26 11:52:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:52:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2023-11-26 11:52:26,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2023-11-26 11:52:26,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 44 transitions. [2023-11-26 11:52:26,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 44 transitions. [2023-11-26 11:52:26,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:26,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 44 transitions. [2023-11-26 11:52:26,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,695 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 44 transitions. [2023-11-26 11:52:26,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 116 flow [2023-11-26 11:52:26,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 94 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 11:52:26,703 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2023-11-26 11:52:26,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-26 11:52:26,705 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-26 11:52:26,705 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2023-11-26 11:52:26,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:26,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:26,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:52:26,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:26,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -706129222, now seen corresponding path program 1 times [2023-11-26 11:52:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263329950] [2023-11-26 11:52:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:26,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:26,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263329950] [2023-11-26 11:52:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263329950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487899252] [2023-11-26 11:52:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:26,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:26,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:26,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:26,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:26,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:26,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:26,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487899252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:27,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:52:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553085534] [2023-11-26 11:52:27,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:27,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:27,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:27,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:27,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:27,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:27,152 INFO L124 PetriNetUnfolderBase]: 31/106 cut-off events. [2023-11-26 11:52:27,152 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-26 11:52:27,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 106 events. 31/106 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 335 event pairs, 30 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 170. Up to 75 conditions per place. [2023-11-26 11:52:27,154 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 14 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2023-11-26 11:52:27,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 123 flow [2023-11-26 11:52:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:52:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2023-11-26 11:52:27,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2023-11-26 11:52:27,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 86 transitions. [2023-11-26 11:52:27,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 86 transitions. [2023-11-26 11:52:27,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:27,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 86 transitions. [2023-11-26 11:52:27,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,165 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,165 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 86 transitions. [2023-11-26 11:52:27,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 123 flow [2023-11-26 11:52:27,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:27,167 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2023-11-26 11:52:27,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-11-26 11:52:27,168 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-26 11:52:27,168 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2023-11-26 11:52:27,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:27,169 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:27,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:27,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:27,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:27,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash -678082086, now seen corresponding path program 2 times [2023-11-26 11:52:27,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:27,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53498332] [2023-11-26 11:52:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:52:27,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:27,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53498332] [2023-11-26 11:52:27,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53498332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:27,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:27,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:27,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362950846] [2023-11-26 11:52:27,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:27,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:27,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:27,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:27,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:27,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:27,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:27,622 INFO L124 PetriNetUnfolderBase]: 37/115 cut-off events. [2023-11-26 11:52:27,623 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 11:52:27,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 115 events. 37/115 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 341 event pairs, 16 based on Foata normal form. 6/114 useless extension candidates. Maximal degree in co-relation 196. Up to 67 conditions per place. [2023-11-26 11:52:27,624 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 26 selfloop transitions, 4 changer transitions 6/42 dead transitions. [2023-11-26 11:52:27,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 190 flow [2023-11-26 11:52:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2023-11-26 11:52:27,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-11-26 11:52:27,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 80 transitions. [2023-11-26 11:52:27,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 80 transitions. [2023-11-26 11:52:27,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:27,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 80 transitions. [2023-11-26 11:52:27,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,633 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,633 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 5 states and 80 transitions. [2023-11-26 11:52:27,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 190 flow [2023-11-26 11:52:27,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:27,638 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 113 flow [2023-11-26 11:52:27,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-11-26 11:52:27,642 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-26 11:52:27,642 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 113 flow [2023-11-26 11:52:27,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:27,647 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:27,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:52:27,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:27,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -677699769, now seen corresponding path program 1 times [2023-11-26 11:52:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:27,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206930087] [2023-11-26 11:52:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:52:27,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206930087] [2023-11-26 11:52:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206930087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:27,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:27,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232434290] [2023-11-26 11:52:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:27,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:27,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:27,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:27,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:27,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:27,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:27,854 INFO L124 PetriNetUnfolderBase]: 31/107 cut-off events. [2023-11-26 11:52:27,854 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-26 11:52:27,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 107 events. 31/107 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 342 event pairs, 15 based on Foata normal form. 7/113 useless extension candidates. Maximal degree in co-relation 228. Up to 40 conditions per place. [2023-11-26 11:52:27,859 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 28 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-11-26 11:52:27,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 208 flow [2023-11-26 11:52:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2023-11-26 11:52:27,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-11-26 11:52:27,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2023-11-26 11:52:27,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2023-11-26 11:52:27,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:27,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2023-11-26 11:52:27,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,866 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 113 flow. Second operand 5 states and 75 transitions. [2023-11-26 11:52:27,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 208 flow [2023-11-26 11:52:27,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 200 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-26 11:52:27,873 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 146 flow [2023-11-26 11:52:27,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-11-26 11:52:27,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-11-26 11:52:27,877 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 146 flow [2023-11-26 11:52:27,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:27,877 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:27,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:52:27,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:27,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:27,878 INFO L85 PathProgramCache]: Analyzing trace with hash 466143822, now seen corresponding path program 1 times [2023-11-26 11:52:27,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:27,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975049474] [2023-11-26 11:52:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:52:27,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:27,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975049474] [2023-11-26 11:52:27,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975049474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:27,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:27,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:27,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243054887] [2023-11-26 11:52:27,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:27,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:27,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:27,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:27,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:27,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:27,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:28,072 INFO L124 PetriNetUnfolderBase]: 24/96 cut-off events. [2023-11-26 11:52:28,072 INFO L125 PetriNetUnfolderBase]: For 88/90 co-relation queries the response was YES. [2023-11-26 11:52:28,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 96 events. 24/96 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 293 event pairs, 9 based on Foata normal form. 9/104 useless extension candidates. Maximal degree in co-relation 211. Up to 40 conditions per place. [2023-11-26 11:52:28,077 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 27 selfloop transitions, 5 changer transitions 2/40 dead transitions. [2023-11-26 11:52:28,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 230 flow [2023-11-26 11:52:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2023-11-26 11:52:28,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2023-11-26 11:52:28,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 76 transitions. [2023-11-26 11:52:28,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 76 transitions. [2023-11-26 11:52:28,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:28,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 76 transitions. [2023-11-26 11:52:28,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,083 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,083 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 146 flow. Second operand 5 states and 76 transitions. [2023-11-26 11:52:28,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 230 flow [2023-11-26 11:52:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:52:28,089 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 141 flow [2023-11-26 11:52:28,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2023-11-26 11:52:28,091 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2023-11-26 11:52:28,091 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 141 flow [2023-11-26 11:52:28,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:28,092 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:52:28,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:28,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 82830574, now seen corresponding path program 1 times [2023-11-26 11:52:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:28,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703438632] [2023-11-26 11:52:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:28,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:52:28,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:28,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703438632] [2023-11-26 11:52:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703438632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708702561] [2023-11-26 11:52:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:28,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:28,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 27 [2023-11-26 11:52:28,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:28,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 27 [2023-11-26 11:52:28,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:28,236 INFO L124 PetriNetUnfolderBase]: 10/62 cut-off events. [2023-11-26 11:52:28,236 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-26 11:52:28,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 62 events. 10/62 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 2 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 148. Up to 24 conditions per place. [2023-11-26 11:52:28,238 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 22 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-11-26 11:52:28,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 199 flow [2023-11-26 11:52:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:52:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2023-11-26 11:52:28,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:52:28,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 54 transitions. [2023-11-26 11:52:28,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 54 transitions. [2023-11-26 11:52:28,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:28,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 54 transitions. [2023-11-26 11:52:28,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,243 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 141 flow. Second operand 3 states and 54 transitions. [2023-11-26 11:52:28,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 199 flow [2023-11-26 11:52:28,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 186 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-26 11:52:28,247 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 136 flow [2023-11-26 11:52:28,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2023-11-26 11:52:28,251 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-26 11:52:28,251 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 136 flow [2023-11-26 11:52:28,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:28,252 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:28,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:52:28,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:28,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -316959622, now seen corresponding path program 1 times [2023-11-26 11:52:28,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:28,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938965735] [2023-11-26 11:52:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:28,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:28,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:28,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938965735] [2023-11-26 11:52:28,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938965735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:28,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733373796] [2023-11-26 11:52:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:28,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:28,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:28,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:28,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:28,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:28,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733373796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:28,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 11:52:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823567073] [2023-11-26 11:52:28,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:28,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:52:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:28,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:52:28,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:52:28,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:28,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 136 flow. Second operand has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:28,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:28,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:28,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:29,017 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2023-11-26 11:52:29,018 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-26 11:52:29,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 74 events. 10/74 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 9 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 145. Up to 37 conditions per place. [2023-11-26 11:52:29,019 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/39 dead transitions. [2023-11-26 11:52:29,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 39 transitions, 246 flow [2023-11-26 11:52:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:52:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:52:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 168 transitions. [2023-11-26 11:52:29,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2023-11-26 11:52:29,021 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 168 transitions. [2023-11-26 11:52:29,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 168 transitions. [2023-11-26 11:52:29,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:29,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 168 transitions. [2023-11-26 11:52:29,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 27.0) internal successors, (432), 16 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,025 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 27.0) internal successors, (432), 16 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,025 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 136 flow. Second operand 15 states and 168 transitions. [2023-11-26 11:52:29,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 39 transitions, 246 flow [2023-11-26 11:52:29,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 39 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:52:29,028 INFO L231 Difference]: Finished difference. Result has 65 places, 39 transitions, 229 flow [2023-11-26 11:52:29,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=39} [2023-11-26 11:52:29,033 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2023-11-26 11:52:29,033 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 39 transitions, 229 flow [2023-11-26 11:52:29,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:29,034 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:29,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:29,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:29,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 678841018, now seen corresponding path program 2 times [2023-11-26 11:52:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385051787] [2023-11-26 11:52:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:29,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:29,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385051787] [2023-11-26 11:52:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385051787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196099854] [2023-11-26 11:52:29,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:52:29,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:29,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:29,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:29,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:52:29,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:52:29,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:52:29,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:29,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 11:52:29,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:29,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196099854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:29,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 20 [2023-11-26 11:52:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316373555] [2023-11-26 11:52:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:52:29,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2023-11-26 11:52:29,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 39 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:29,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2023-11-26 11:52:29,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:29,864 INFO L124 PetriNetUnfolderBase]: 13/73 cut-off events. [2023-11-26 11:52:29,864 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-26 11:52:29,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 73 events. 13/73 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 6 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 168. Up to 41 conditions per place. [2023-11-26 11:52:29,865 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-11-26 11:52:29,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 40 transitions, 301 flow [2023-11-26 11:52:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:52:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2023-11-26 11:52:29,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-26 11:52:29,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 54 transitions. [2023-11-26 11:52:29,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 54 transitions. [2023-11-26 11:52:29,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:29,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 54 transitions. [2023-11-26 11:52:29,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,869 INFO L175 Difference]: Start difference. First operand has 65 places, 39 transitions, 229 flow. Second operand 5 states and 54 transitions. [2023-11-26 11:52:29,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 40 transitions, 301 flow [2023-11-26 11:52:29,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 40 transitions, 288 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-26 11:52:29,872 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 222 flow [2023-11-26 11:52:29,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2023-11-26 11:52:29,874 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-11-26 11:52:29,874 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 222 flow [2023-11-26 11:52:29,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:29,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:29,875 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:29,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:52:30,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:52:30,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:30,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash -430764741, now seen corresponding path program 1 times [2023-11-26 11:52:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:30,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526860533] [2023-11-26 11:52:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:30,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:30,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526860533] [2023-11-26 11:52:30,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526860533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:30,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855541903] [2023-11-26 11:52:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:30,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:30,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:30,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:30,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:52:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:52:30,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:30,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855541903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:30,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:30,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-26 11:52:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756924365] [2023-11-26 11:52:30,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:30,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:52:30,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:30,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:52:30,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:52:30,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2023-11-26 11:52:30,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 222 flow. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 23 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:30,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:30,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2023-11-26 11:52:30,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:31,233 INFO L124 PetriNetUnfolderBase]: 10/79 cut-off events. [2023-11-26 11:52:31,233 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-26 11:52:31,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 79 events. 10/79 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 9 based on Foata normal form. 3/81 useless extension candidates. Maximal degree in co-relation 200. Up to 37 conditions per place. [2023-11-26 11:52:31,234 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 21 changer transitions 0/43 dead transitions. [2023-11-26 11:52:31,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 43 transitions, 350 flow [2023-11-26 11:52:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:52:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:52:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 227 transitions. [2023-11-26 11:52:31,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400352733686067 [2023-11-26 11:52:31,237 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 227 transitions. [2023-11-26 11:52:31,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 227 transitions. [2023-11-26 11:52:31,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:31,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 227 transitions. [2023-11-26 11:52:31,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 10.80952380952381) internal successors, (227), 21 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 27.0) internal successors, (594), 22 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,241 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 27.0) internal successors, (594), 22 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,242 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 222 flow. Second operand 21 states and 227 transitions. [2023-11-26 11:52:31,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 43 transitions, 350 flow [2023-11-26 11:52:31,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 43 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:52:31,246 INFO L231 Difference]: Finished difference. Result has 80 places, 43 transitions, 319 flow [2023-11-26 11:52:31,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=319, PETRI_PLACES=80, PETRI_TRANSITIONS=43} [2023-11-26 11:52:31,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2023-11-26 11:52:31,247 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 43 transitions, 319 flow [2023-11-26 11:52:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 23 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:31,248 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:31,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:31,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:52:31,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:31,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash -541043000, now seen corresponding path program 2 times [2023-11-26 11:52:31,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:31,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070949306] [2023-11-26 11:52:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:31,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:52:31,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:31,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070949306] [2023-11-26 11:52:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070949306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:31,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:31,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870767331] [2023-11-26 11:52:31,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:31,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:31,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2023-11-26 11:52:31,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 43 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:31,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2023-11-26 11:52:31,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:31,732 INFO L124 PetriNetUnfolderBase]: 11/78 cut-off events. [2023-11-26 11:52:31,732 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-26 11:52:31,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 78 events. 11/78 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 5 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 221. Up to 29 conditions per place. [2023-11-26 11:52:31,734 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 3 changer transitions 8/47 dead transitions. [2023-11-26 11:52:31,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 47 transitions, 413 flow [2023-11-26 11:52:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:52:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2023-11-26 11:52:31,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2023-11-26 11:52:31,736 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 74 transitions. [2023-11-26 11:52:31,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 74 transitions. [2023-11-26 11:52:31,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:31,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 74 transitions. [2023-11-26 11:52:31,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,739 INFO L175 Difference]: Start difference. First operand has 80 places, 43 transitions, 319 flow. Second operand 7 states and 74 transitions. [2023-11-26 11:52:31,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 47 transitions, 413 flow [2023-11-26 11:52:31,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 47 transitions, 368 flow, removed 1 selfloop flow, removed 14 redundant places. [2023-11-26 11:52:31,744 INFO L231 Difference]: Finished difference. Result has 70 places, 37 transitions, 255 flow [2023-11-26 11:52:31,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=37} [2023-11-26 11:52:31,746 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-11-26 11:52:31,746 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 37 transitions, 255 flow [2023-11-26 11:52:31,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:52:31,747 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:31,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:52:31,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:52:31,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 32809180, now seen corresponding path program 1 times [2023-11-26 11:52:31,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:31,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619666989] [2023-11-26 11:52:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:31,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:52:31,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:31,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619666989] [2023-11-26 11:52:31,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619666989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:31,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:52:31,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425753354] [2023-11-26 11:52:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:31,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:31,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:31,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:31,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2023-11-26 11:52:31,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 37 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:31,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:52:31,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2023-11-26 11:52:31,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:52:32,017 INFO L124 PetriNetUnfolderBase]: 8/62 cut-off events. [2023-11-26 11:52:32,017 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2023-11-26 11:52:32,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 62 events. 8/62 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 2 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 205. Up to 29 conditions per place. [2023-11-26 11:52:32,018 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-11-26 11:52:32,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 40 transitions, 332 flow [2023-11-26 11:52:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:52:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2023-11-26 11:52:32,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2023-11-26 11:52:32,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 60 transitions. [2023-11-26 11:52:32,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 60 transitions. [2023-11-26 11:52:32,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:52:32,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 60 transitions. [2023-11-26 11:52:32,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:32,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:32,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:32,022 INFO L175 Difference]: Start difference. First operand has 70 places, 37 transitions, 255 flow. Second operand 6 states and 60 transitions. [2023-11-26 11:52:32,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 40 transitions, 332 flow [2023-11-26 11:52:32,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 40 transitions, 317 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 11:52:32,025 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-11-26 11:52:32,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-11-26 11:52:32,026 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2023-11-26 11:52:32,026 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-11-26 11:52:32,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:32,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2023-11-26 11:52:32,030 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-26 11:52:32,030 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-26 11:52:32,030 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-26 11:52:32,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-11-26 11:52:32,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-26 11:52:32,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-26 11:52:32,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-26 11:52:32,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-26 11:52:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:52:32,032 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:32,038 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:52:32,038 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:52:32,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:52:32 BasicIcfg [2023-11-26 11:52:32,044 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:52:32,045 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:52:32,045 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:52:32,045 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:52:32,046 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:24" (3/4) ... [2023-11-26 11:52:32,047 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:52:32,051 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-26 11:52:32,055 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-26 11:52:32,055 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 11:52:32,055 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 11:52:32,144 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:52:32,144 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:52:32,144 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:52:32,145 INFO L158 Benchmark]: Toolchain (without parser) took 8300.02ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 99.0MB in the beginning and 114.1MB in the end (delta: -15.1MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-11-26 11:52:32,146 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:32,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.93ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 79.0MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:52:32,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.23ms. Allocated memory is still 146.8MB. Free memory was 79.0MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:32,147 INFO L158 Benchmark]: Boogie Preprocessor took 44.28ms. Allocated memory is still 146.8MB. Free memory was 77.5MB in the beginning and 75.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:32,147 INFO L158 Benchmark]: RCFGBuilder took 445.49ms. Allocated memory is still 146.8MB. Free memory was 75.4MB in the beginning and 57.4MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:52:32,148 INFO L158 Benchmark]: TraceAbstraction took 7074.74ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 57.0MB in the beginning and 118.3MB in the end (delta: -61.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:32,148 INFO L158 Benchmark]: Witness Printer took 99.87ms. Allocated memory is still 188.7MB. Free memory was 118.3MB in the beginning and 114.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:52:32,150 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.93ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 79.0MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.23ms. Allocated memory is still 146.8MB. Free memory was 79.0MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.28ms. Allocated memory is still 146.8MB. Free memory was 77.5MB in the beginning and 75.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 445.49ms. Allocated memory is still 146.8MB. Free memory was 75.4MB in the beginning and 57.4MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7074.74ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 57.0MB in the beginning and 118.3MB in the end (delta: -61.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 99.87ms. Allocated memory is still 188.7MB. Free memory was 118.3MB in the beginning and 114.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 38 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.9s, OverallIterations: 13, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 976 IncrementalHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 15 mSDtfsCounter, 976 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319occurred in iteration=11, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 382 NumberOfCodeBlocks, 361 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 1020 SizeOfPredicates, 14 NumberOfNonLiveVariables, 472 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 413/734 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:52:32,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da24bc7f-6f73-4457-a22b-c677043dbd26/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE