./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/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_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/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_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:35,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:35,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:41:35,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:35,453 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:35,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:35,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:35,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:35,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:35,515 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:35,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:35,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:35,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:35,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:35,530 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:35,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:35,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:35,531 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:35,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:35,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:35,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:35,533 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:35,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:35,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:35,535 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:41:35,535 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:41:35,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:35,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:35,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:35,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:35,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:35,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:35,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:35,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:35,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:35,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:35,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:35,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:35,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:35,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:35,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:35,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:35,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:35,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:35,543 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_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2023-11-26 10:41:35,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:35,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:35,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:35,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:35,829 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:35,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-26 10:41:39,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:39,472 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:39,472 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-26 10:41:39,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/data/418bea5ff/94788dd856984878a2e63167ee3b7dd3/FLAG2bcb92cee [2023-11-26 10:41:39,528 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/data/418bea5ff/94788dd856984878a2e63167ee3b7dd3 [2023-11-26 10:41:39,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:39,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:39,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:39,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:39,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:39,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:39" (1/1) ... [2023-11-26 10:41:39,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aac2389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:39, skipping insertion in model container [2023-11-26 10:41:39,552 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:39" (1/1) ... [2023-11-26 10:41:39,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:40,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:40,203 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:40,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:40,389 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:40,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40 WrapperNode [2023-11-26 10:41:40,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:40,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:40,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:40,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:40,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,475 INFO L138 Inliner]: procedures = 265, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2023-11-26 10:41:40,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:40,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:40,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:40,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:40,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,527 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [5, 1]. 83 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [3, 1]. [2023-11-26 10:41:40,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:40,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:40,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:40,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:40,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (1/1) ... [2023-11-26 10:41:40,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:40,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:40,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:41:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:41:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:41:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:41:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:41:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:41:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:41:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:41:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 10:41:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 10:41:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:40,669 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 10:41:40,825 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:40,827 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:41,038 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:41,260 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:41,263 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:41:41,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:41 BoogieIcfgContainer [2023-11-26 10:41:41,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:41,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:41,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:41,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:41,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:39" (1/3) ... [2023-11-26 10:41:41,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfa5915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:41, skipping insertion in model container [2023-11-26 10:41:41,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:40" (2/3) ... [2023-11-26 10:41:41,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfa5915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:41, skipping insertion in model container [2023-11-26 10:41:41,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:41" (3/3) ... [2023-11-26 10:41:41,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2023-11-26 10:41:41,287 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:41:41,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:41,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 10:41:41,301 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:41:41,347 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:41:41,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2023-11-26 10:41:41,417 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-11-26 10:41:41,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:41:41,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 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. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2023-11-26 10:41:41,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2023-11-26 10:41:41,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2023-11-26 10:41:41,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:41,446 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;@64aec868, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:41,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 10:41:41,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:41:41,451 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:41:41,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:41:41,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:41,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:41:41,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:41,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash 239741, now seen corresponding path program 1 times [2023-11-26 10:41:41,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182491004] [2023-11-26 10:41:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:41,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:41,805 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 10:41:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182491004] [2023-11-26 10:41:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182491004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:41,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:41,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:41,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874500502] [2023-11-26 10:41:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:41,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:41,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 10:41:41,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:41,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:41,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:42,045 INFO L124 PetriNetUnfolderBase]: 43/143 cut-off events. [2023-11-26 10:41:42,045 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:41:42,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 143 events. 43/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 42 based on Foata normal form. 1/127 useless extension candidates. Maximal degree in co-relation 233. Up to 100 conditions per place. [2023-11-26 10:41:42,050 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-26 10:41:42,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 99 flow [2023-11-26 10:41:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:41:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2023-11-26 10:41:42,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2023-11-26 10:41:42,069 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 64 transitions. [2023-11-26 10:41:42,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 64 transitions. [2023-11-26 10:41:42,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:42,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 64 transitions. [2023-11-26 10:41:42,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 10:41:42,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:42,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:42,092 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 64 transitions. [2023-11-26 10:41:42,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 99 flow [2023-11-26 10:41:42,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:41:42,101 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 68 flow [2023-11-26 10:41:42,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-26 10:41:42,111 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-11-26 10:41:42,111 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 68 flow [2023-11-26 10:41:42,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 10:41:42,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:42,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 10:41:42,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:41:42,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:42,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 7432219, now seen corresponding path program 1 times [2023-11-26 10:41:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:42,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251730700] [2023-11-26 10:41:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,263 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 10:41:42,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:42,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251730700] [2023-11-26 10:41:42,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251730700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:42,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:42,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:42,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100661900] [2023-11-26 10:41:42,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:42,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:42,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:42,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:42,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 10:41:42,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:42,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:42,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:42,406 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2023-11-26 10:41:42,407 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:41:42,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 146 events. 43/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 551 event pairs, 42 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 237. Up to 104 conditions per place. [2023-11-26 10:41:42,410 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 18 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-26 10:41:42,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 118 flow [2023-11-26 10:41:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:41:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2023-11-26 10:41:42,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2023-11-26 10:41:42,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 67 transitions. [2023-11-26 10:41:42,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 67 transitions. [2023-11-26 10:41:42,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:42,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 67 transitions. [2023-11-26 10:41:42,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 10:41:42,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:42,420 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:42,420 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 68 flow. Second operand 4 states and 67 transitions. [2023-11-26 10:41:42,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 118 flow [2023-11-26 10:41:42,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:41:42,423 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 82 flow [2023-11-26 10:41:42,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-26 10:41:42,425 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-11-26 10:41:42,425 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 82 flow [2023-11-26 10:41:42,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 10:41:42,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:42,426 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:41:42,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:41:42,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:42,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:42,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1924840366, now seen corresponding path program 1 times [2023-11-26 10:41:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852719281] [2023-11-26 10:41:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,529 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 10:41:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:42,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852719281] [2023-11-26 10:41:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852719281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:42,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:42,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627361575] [2023-11-26 10:41:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:42,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:42,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:42,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:42,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 10:41:42,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:42,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:42,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:42,650 INFO L124 PetriNetUnfolderBase]: 43/145 cut-off events. [2023-11-26 10:41:42,651 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:41:42,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 145 events. 43/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 550 event pairs, 42 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 247. Up to 103 conditions per place. [2023-11-26 10:41:42,655 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-11-26 10:41:42,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 118 flow [2023-11-26 10:41:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:41:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2023-11-26 10:41:42,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2023-11-26 10:41:42,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 52 transitions. [2023-11-26 10:41:42,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 52 transitions. [2023-11-26 10:41:42,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:42,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 52 transitions. [2023-11-26 10:41:42,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 10:41:42,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 10:41:42,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 10:41:42,662 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 82 flow. Second operand 3 states and 52 transitions. [2023-11-26 10:41:42,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 118 flow [2023-11-26 10:41:42,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:41:42,665 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 84 flow [2023-11-26 10:41:42,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-11-26 10:41:42,668 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-11-26 10:41:42,669 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 84 flow [2023-11-26 10:41:42,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 10:41:42,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:42,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:42,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:41:42,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:42,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash -752630643, now seen corresponding path program 1 times [2023-11-26 10:41:42,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:42,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021117859] [2023-11-26 10:41:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,802 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 10:41:42,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021117859] [2023-11-26 10:41:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021117859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746145866] [2023-11-26 10:41:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:42,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:42,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:42,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:42,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:42,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:41:42,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:42,975 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 10:41:42,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:43,013 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 10:41:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746145866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:43,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:43,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 10:41:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040512522] [2023-11-26 10:41:43,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:41:43,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:41:43,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:41:43,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:43,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 84 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:43,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:43,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:43,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:43,156 INFO L124 PetriNetUnfolderBase]: 43/149 cut-off events. [2023-11-26 10:41:43,156 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-26 10:41:43,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 149 events. 43/149 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 42 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 244. Up to 101 conditions per place. [2023-11-26 10:41:43,158 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-11-26 10:41:43,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 148 flow [2023-11-26 10:41:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:41:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:41:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2023-11-26 10:41:43,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2023-11-26 10:41:43,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 102 transitions. [2023-11-26 10:41:43,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 102 transitions. [2023-11-26 10:41:43,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:43,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 102 transitions. [2023-11-26 10:41:43,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:43,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 10:41:43,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 10:41:43,164 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 84 flow. Second operand 7 states and 102 transitions. [2023-11-26 10:41:43,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 148 flow [2023-11-26 10:41:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:41:43,167 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 113 flow [2023-11-26 10:41:43,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-26 10:41:43,168 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-11-26 10:41:43,169 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 113 flow [2023-11-26 10:41:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:43,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:43,169 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:43,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:43,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:43,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:43,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash 933514541, now seen corresponding path program 2 times [2023-11-26 10:41:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833045128] [2023-11-26 10:41:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:43,561 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 10:41:43,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833045128] [2023-11-26 10:41:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833045128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057224604] [2023-11-26 10:41:43,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:41:43,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:43,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:43,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:43,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:41:43,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:41:43,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:43,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:41:43,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:43,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 10:41:43,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-11-26 10:41:43,821 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 10:41:43,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057224604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:43,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2023-11-26 10:41:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127516979] [2023-11-26 10:41:43,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:41:43,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:43,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:43,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:43,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:43,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:43,976 INFO L124 PetriNetUnfolderBase]: 57/164 cut-off events. [2023-11-26 10:41:43,977 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 10:41:43,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 164 events. 57/164 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 562 event pairs, 18 based on Foata normal form. 8/155 useless extension candidates. Maximal degree in co-relation 289. Up to 74 conditions per place. [2023-11-26 10:41:43,980 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 35 selfloop transitions, 6 changer transitions 3/52 dead transitions. [2023-11-26 10:41:43,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 239 flow [2023-11-26 10:41:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:41:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2023-11-26 10:41:43,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6193548387096774 [2023-11-26 10:41:43,983 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 96 transitions. [2023-11-26 10:41:43,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 96 transitions. [2023-11-26 10:41:43,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:43,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 96 transitions. [2023-11-26 10:41:43,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 10:41:43,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 10:41:43,988 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 10:41:43,989 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 113 flow. Second operand 5 states and 96 transitions. [2023-11-26 10:41:43,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 239 flow [2023-11-26 10:41:43,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 225 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-26 10:41:43,994 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 137 flow [2023-11-26 10:41:43,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-11-26 10:41:43,997 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-11-26 10:41:43,997 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 137 flow [2023-11-26 10:41:43,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:43,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:43,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:44,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:44,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:44,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:44,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash 933753608, now seen corresponding path program 1 times [2023-11-26 10:41:44,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:44,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20143310] [2023-11-26 10:41:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:44,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,364 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 10:41:44,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20143310] [2023-11-26 10:41:44,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20143310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:44,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:44,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916803420] [2023-11-26 10:41:44,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:44,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:44,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:44,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:44,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:44,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:44,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:44,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:44,473 INFO L124 PetriNetUnfolderBase]: 39/137 cut-off events. [2023-11-26 10:41:44,473 INFO L125 PetriNetUnfolderBase]: For 62/65 co-relation queries the response was YES. [2023-11-26 10:41:44,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 137 events. 39/137 cut-off events. For 62/65 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 477 event pairs, 8 based on Foata normal form. 7/133 useless extension candidates. Maximal degree in co-relation 282. Up to 62 conditions per place. [2023-11-26 10:41:44,479 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-26 10:41:44,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 251 flow [2023-11-26 10:41:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:44,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:41:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2023-11-26 10:41:44,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2023-11-26 10:41:44,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 76 transitions. [2023-11-26 10:41:44,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 76 transitions. [2023-11-26 10:41:44,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:44,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 76 transitions. [2023-11-26 10:41:44,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 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 10:41:44,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:44,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:44,485 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 137 flow. Second operand 4 states and 76 transitions. [2023-11-26 10:41:44,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 251 flow [2023-11-26 10:41:44,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:41:44,493 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 141 flow [2023-11-26 10:41:44,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-26 10:41:44,497 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-11-26 10:41:44,497 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 141 flow [2023-11-26 10:41:44,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:44,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:44,498 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:44,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:41:44,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:44,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:44,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1125820057, now seen corresponding path program 1 times [2023-11-26 10:41:44,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:44,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531382410] [2023-11-26 10:41:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,676 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 10:41:44,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531382410] [2023-11-26 10:41:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531382410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063938192] [2023-11-26 10:41:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:44,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:44,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:44,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:44,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:41:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:44,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:41:44,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:44,851 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 10:41:44,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:44,987 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 10:41:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063938192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:44,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:44,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-26 10:41:44,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491679331] [2023-11-26 10:41:44,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:44,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 10:41:44,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 10:41:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:41:45,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:45,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 141 flow. Second operand has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 10:41:45,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:45,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:45,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:45,220 INFO L124 PetriNetUnfolderBase]: 33/146 cut-off events. [2023-11-26 10:41:45,220 INFO L125 PetriNetUnfolderBase]: For 79/80 co-relation queries the response was YES. [2023-11-26 10:41:45,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 146 events. 33/146 cut-off events. For 79/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 491 event pairs, 32 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 321. Up to 85 conditions per place. [2023-11-26 10:41:45,222 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 18 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2023-11-26 10:41:45,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 255 flow [2023-11-26 10:41:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:41:45,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:41:45,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2023-11-26 10:41:45,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2023-11-26 10:41:45,226 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 200 transitions. [2023-11-26 10:41:45,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 200 transitions. [2023-11-26 10:41:45,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:45,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 200 transitions. [2023-11-26 10:41:45,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 10:41:45,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 31.0) internal successors, (496), 16 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 10:41:45,230 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 31.0) internal successors, (496), 16 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 10:41:45,230 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 141 flow. Second operand 15 states and 200 transitions. [2023-11-26 10:41:45,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 255 flow [2023-11-26 10:41:45,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 249 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:41:45,236 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 232 flow [2023-11-26 10:41:45,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=232, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2023-11-26 10:41:45,237 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-11-26 10:41:45,237 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 232 flow [2023-11-26 10:41:45,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.25) internal successors, (196), 16 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 10:41:45,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:45,238 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:45,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:45,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:41:45,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:45,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:45,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1103996889, now seen corresponding path program 2 times [2023-11-26 10:41:45,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:45,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864076600] [2023-11-26 10:41:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:45,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:45,794 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 10:41:45,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864076600] [2023-11-26 10:41:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864076600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218649982] [2023-11-26 10:41:45,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:41:45,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:45,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:45,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:45,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:41:45,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:41:45,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:45,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:41:45,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:45,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 10:41:45,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-11-26 10:41:45,999 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 10:41:45,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:45,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218649982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:45,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:45,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2023-11-26 10:41:46,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832812162] [2023-11-26 10:41:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:46,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:46,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:46,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:46,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-26 10:41:46,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:46,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:46,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:46,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:46,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:46,134 INFO L124 PetriNetUnfolderBase]: 37/139 cut-off events. [2023-11-26 10:41:46,134 INFO L125 PetriNetUnfolderBase]: For 111/113 co-relation queries the response was YES. [2023-11-26 10:41:46,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 139 events. 37/139 cut-off events. For 111/113 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 406 event pairs, 12 based on Foata normal form. 10/146 useless extension candidates. Maximal degree in co-relation 310. Up to 53 conditions per place. [2023-11-26 10:41:46,136 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 41 selfloop transitions, 5 changer transitions 1/54 dead transitions. [2023-11-26 10:41:46,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 346 flow [2023-11-26 10:41:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:46,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:41:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2023-11-26 10:41:46,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5870967741935483 [2023-11-26 10:41:46,138 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 91 transitions. [2023-11-26 10:41:46,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 91 transitions. [2023-11-26 10:41:46,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:46,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 91 transitions. [2023-11-26 10:41:46,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 10:41:46,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 10:41:46,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 10:41:46,140 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 232 flow. Second operand 5 states and 91 transitions. [2023-11-26 10:41:46,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 346 flow [2023-11-26 10:41:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 324 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-26 10:41:46,145 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 210 flow [2023-11-26 10:41:46,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2023-11-26 10:41:46,146 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-11-26 10:41:46,146 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 210 flow [2023-11-26 10:41:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:46,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:46,146 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:46,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:46,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 10:41:46,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:46,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1096585797, now seen corresponding path program 1 times [2023-11-26 10:41:46,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:46,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131876476] [2023-11-26 10:41:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:46,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:41:46,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:46,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131876476] [2023-11-26 10:41:46,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131876476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:46,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:46,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989390770] [2023-11-26 10:41:46,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:46,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:46,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:46,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:46,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:46,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:46,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:46,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:46,565 INFO L124 PetriNetUnfolderBase]: 33/130 cut-off events. [2023-11-26 10:41:46,565 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-11-26 10:41:46,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 130 events. 33/130 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 370 event pairs, 14 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 312. Up to 58 conditions per place. [2023-11-26 10:41:46,567 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-26 10:41:46,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 342 flow [2023-11-26 10:41:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:41:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2023-11-26 10:41:46,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2023-11-26 10:41:46,568 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 75 transitions. [2023-11-26 10:41:46,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 75 transitions. [2023-11-26 10:41:46,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:46,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 75 transitions. [2023-11-26 10:41:46,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.75) internal successors, (75), 4 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 10:41:46,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:46,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:46,570 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 210 flow. Second operand 4 states and 75 transitions. [2023-11-26 10:41:46,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 342 flow [2023-11-26 10:41:46,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 320 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-26 10:41:46,576 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 202 flow [2023-11-26 10:41:46,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2023-11-26 10:41:46,578 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-11-26 10:41:46,578 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 202 flow [2023-11-26 10:41:46,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 10:41:46,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:46,578 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:46,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:41:46,579 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:46,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash 365578922, now seen corresponding path program 1 times [2023-11-26 10:41:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534717866] [2023-11-26 10:41:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:46,775 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 10:41:46,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534717866] [2023-11-26 10:41:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534717866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:46,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:46,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:46,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502468029] [2023-11-26 10:41:46,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:46,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:41:46,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:41:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:46,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:46,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 10:41:46,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:46,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:46,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:46,905 INFO L124 PetriNetUnfolderBase]: 36/136 cut-off events. [2023-11-26 10:41:46,905 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 10:41:46,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 136 events. 36/136 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 8 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 273. Up to 57 conditions per place. [2023-11-26 10:41:46,907 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2023-11-26 10:41:46,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 352 flow [2023-11-26 10:41:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:41:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:41:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2023-11-26 10:41:46,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2023-11-26 10:41:46,908 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 107 transitions. [2023-11-26 10:41:46,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 107 transitions. [2023-11-26 10:41:46,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:46,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 107 transitions. [2023-11-26 10:41:46,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 10:41:46,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:46,910 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:46,910 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 202 flow. Second operand 6 states and 107 transitions. [2023-11-26 10:41:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 352 flow [2023-11-26 10:41:46,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 10:41:46,914 INFO L231 Difference]: Finished difference. Result has 67 places, 43 transitions, 237 flow [2023-11-26 10:41:46,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2023-11-26 10:41:46,915 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-11-26 10:41:46,915 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 237 flow [2023-11-26 10:41:46,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 10:41:46,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:46,916 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 10:41:46,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:41:46,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:46,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1026992622, now seen corresponding path program 1 times [2023-11-26 10:41:46,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:46,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074931120] [2023-11-26 10:41:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:46,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:47,330 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 10:41:47,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074931120] [2023-11-26 10:41:47,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074931120] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:47,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488365701] [2023-11-26 10:41:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:47,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:47,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:47,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:47,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:41:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:47,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:41:47,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:47,556 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 10:41:47,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:47,776 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 10:41:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488365701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:47,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:47,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-26 10:41:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298585758] [2023-11-26 10:41:47,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:47,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 10:41:47,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 10:41:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 10:41:47,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2023-11-26 10:41:47,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 237 flow. Second operand has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 10:41:47,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:47,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2023-11-26 10:41:47,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:48,061 INFO L124 PetriNetUnfolderBase]: 32/135 cut-off events. [2023-11-26 10:41:48,061 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-26 10:41:48,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 135 events. 32/135 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 326 event pairs, 28 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 377. Up to 81 conditions per place. [2023-11-26 10:41:48,063 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 20 selfloop transitions, 21 changer transitions 0/49 dead transitions. [2023-11-26 10:41:48,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 49 transitions, 373 flow [2023-11-26 10:41:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 10:41:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 10:41:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2023-11-26 10:41:48,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2023-11-26 10:41:48,066 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 271 transitions. [2023-11-26 10:41:48,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 271 transitions. [2023-11-26 10:41:48,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:48,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 271 transitions. [2023-11-26 10:41:48,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 10:41:48,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 31.0) internal successors, (682), 22 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 10:41:48,070 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 31.0) internal successors, (682), 22 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 10:41:48,070 INFO L175 Difference]: Start difference. First operand has 67 places, 43 transitions, 237 flow. Second operand 21 states and 271 transitions. [2023-11-26 10:41:48,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 49 transitions, 373 flow [2023-11-26 10:41:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 49 transitions, 365 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-26 10:41:48,074 INFO L231 Difference]: Finished difference. Result has 87 places, 49 transitions, 340 flow [2023-11-26 10:41:48,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=340, PETRI_PLACES=87, PETRI_TRANSITIONS=49} [2023-11-26 10:41:48,075 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2023-11-26 10:41:48,075 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 49 transitions, 340 flow [2023-11-26 10:41:48,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 10:41:48,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:48,076 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 10:41:48,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:48,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 10:41:48,289 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:48,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash 448683575, now seen corresponding path program 2 times [2023-11-26 10:41:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:48,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153659277] [2023-11-26 10:41:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:48,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:48,761 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 10:41:48,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:48,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153659277] [2023-11-26 10:41:48,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153659277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:48,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:48,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:48,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140401830] [2023-11-26 10:41:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:48,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:48,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:48,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 49 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:48,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:48,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:49,072 INFO L124 PetriNetUnfolderBase]: 49/181 cut-off events. [2023-11-26 10:41:49,072 INFO L125 PetriNetUnfolderBase]: For 186/188 co-relation queries the response was YES. [2023-11-26 10:41:49,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 181 events. 49/181 cut-off events. For 186/188 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 586 event pairs, 10 based on Foata normal form. 5/186 useless extension candidates. Maximal degree in co-relation 376. Up to 45 conditions per place. [2023-11-26 10:41:49,074 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 57 selfloop transitions, 10 changer transitions 2/73 dead transitions. [2023-11-26 10:41:49,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 545 flow [2023-11-26 10:41:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:41:49,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:41:49,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2023-11-26 10:41:49,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2023-11-26 10:41:49,076 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 141 transitions. [2023-11-26 10:41:49,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 141 transitions. [2023-11-26 10:41:49,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:49,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 141 transitions. [2023-11-26 10:41:49,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:49,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 10:41:49,079 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 10:41:49,079 INFO L175 Difference]: Start difference. First operand has 87 places, 49 transitions, 340 flow. Second operand 10 states and 141 transitions. [2023-11-26 10:41:49,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 545 flow [2023-11-26 10:41:49,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 496 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-26 10:41:49,087 INFO L231 Difference]: Finished difference. Result has 88 places, 53 transitions, 355 flow [2023-11-26 10:41:49,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=88, PETRI_TRANSITIONS=53} [2023-11-26 10:41:49,088 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2023-11-26 10:41:49,088 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 53 transitions, 355 flow [2023-11-26 10:41:49,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:49,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:49,089 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 10:41:49,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:41:49,089 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:49,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:49,089 INFO L85 PathProgramCache]: Analyzing trace with hash -636989271, now seen corresponding path program 3 times [2023-11-26 10:41:49,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:49,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630543014] [2023-11-26 10:41:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:49,534 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 10:41:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:49,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630543014] [2023-11-26 10:41:49,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630543014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:49,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:49,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460069098] [2023-11-26 10:41:49,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:49,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:49,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 53 transitions, 355 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:49,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:49,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:49,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:49,874 INFO L124 PetriNetUnfolderBase]: 55/206 cut-off events. [2023-11-26 10:41:49,875 INFO L125 PetriNetUnfolderBase]: For 340/343 co-relation queries the response was YES. [2023-11-26 10:41:49,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 206 events. 55/206 cut-off events. For 340/343 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 742 event pairs, 16 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 554. Up to 60 conditions per place. [2023-11-26 10:41:49,877 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 59 selfloop transitions, 13 changer transitions 1/77 dead transitions. [2023-11-26 10:41:49,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 77 transitions, 573 flow [2023-11-26 10:41:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:41:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 10:41:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2023-11-26 10:41:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2023-11-26 10:41:49,880 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 161 transitions. [2023-11-26 10:41:49,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 161 transitions. [2023-11-26 10:41:49,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:49,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 161 transitions. [2023-11-26 10:41:49,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 13.416666666666666) internal successors, (161), 12 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 10:41:49,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 10:41:49,883 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 10:41:49,883 INFO L175 Difference]: Start difference. First operand has 88 places, 53 transitions, 355 flow. Second operand 12 states and 161 transitions. [2023-11-26 10:41:49,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 77 transitions, 573 flow [2023-11-26 10:41:49,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 77 transitions, 558 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-26 10:41:49,889 INFO L231 Difference]: Finished difference. Result has 98 places, 56 transitions, 406 flow [2023-11-26 10:41:49,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=406, PETRI_PLACES=98, PETRI_TRANSITIONS=56} [2023-11-26 10:41:49,890 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 65 predicate places. [2023-11-26 10:41:49,890 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 56 transitions, 406 flow [2023-11-26 10:41:49,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:49,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:49,891 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 10:41:49,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:41:49,891 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:49,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash -938762340, now seen corresponding path program 1 times [2023-11-26 10:41:49,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:49,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589898269] [2023-11-26 10:41:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:50,352 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 10:41:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589898269] [2023-11-26 10:41:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589898269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:50,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562327492] [2023-11-26 10:41:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:50,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:50,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:50,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:50,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 56 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:50,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:50,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:50,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:50,606 INFO L124 PetriNetUnfolderBase]: 53/195 cut-off events. [2023-11-26 10:41:50,606 INFO L125 PetriNetUnfolderBase]: For 446/449 co-relation queries the response was YES. [2023-11-26 10:41:50,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 195 events. 53/195 cut-off events. For 446/449 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 692 event pairs, 10 based on Foata normal form. 6/201 useless extension candidates. Maximal degree in co-relation 564. Up to 67 conditions per place. [2023-11-26 10:41:50,609 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 61 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-11-26 10:41:50,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 77 transitions, 641 flow [2023-11-26 10:41:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:41:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:41:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2023-11-26 10:41:50,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551971326164875 [2023-11-26 10:41:50,611 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 127 transitions. [2023-11-26 10:41:50,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 127 transitions. [2023-11-26 10:41:50,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:50,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 127 transitions. [2023-11-26 10:41:50,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:50,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:50,616 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:50,617 INFO L175 Difference]: Start difference. First operand has 98 places, 56 transitions, 406 flow. Second operand 9 states and 127 transitions. [2023-11-26 10:41:50,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 77 transitions, 641 flow [2023-11-26 10:41:50,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 77 transitions, 589 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-11-26 10:41:50,623 INFO L231 Difference]: Finished difference. Result has 93 places, 55 transitions, 381 flow [2023-11-26 10:41:50,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=381, PETRI_PLACES=93, PETRI_TRANSITIONS=55} [2023-11-26 10:41:50,625 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2023-11-26 10:41:50,625 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 55 transitions, 381 flow [2023-11-26 10:41:50,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:50,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:50,626 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 10:41:50,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:41:50,626 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:50,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash -63812779, now seen corresponding path program 4 times [2023-11-26 10:41:50,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:50,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436523517] [2023-11-26 10:41:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:51,046 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 10:41:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436523517] [2023-11-26 10:41:51,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436523517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:51,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:51,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414069685] [2023-11-26 10:41:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:51,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:51,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:51,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:51,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 55 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:51,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:51,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:51,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:51,315 INFO L124 PetriNetUnfolderBase]: 51/194 cut-off events. [2023-11-26 10:41:51,315 INFO L125 PetriNetUnfolderBase]: For 335/338 co-relation queries the response was YES. [2023-11-26 10:41:51,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 194 events. 51/194 cut-off events. For 335/338 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 677 event pairs, 4 based on Foata normal form. 6/200 useless extension candidates. Maximal degree in co-relation 514. Up to 70 conditions per place. [2023-11-26 10:41:51,318 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 50 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2023-11-26 10:41:51,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 68 transitions, 535 flow [2023-11-26 10:41:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:41:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:41:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2023-11-26 10:41:51,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2023-11-26 10:41:51,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 131 transitions. [2023-11-26 10:41:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 131 transitions. [2023-11-26 10:41:51,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:51,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 131 transitions. [2023-11-26 10:41:51,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:51,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 10:41:51,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 31.0) internal successors, (341), 11 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 10:41:51,322 INFO L175 Difference]: Start difference. First operand has 93 places, 55 transitions, 381 flow. Second operand 10 states and 131 transitions. [2023-11-26 10:41:51,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 68 transitions, 535 flow [2023-11-26 10:41:51,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 68 transitions, 504 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-26 10:41:51,328 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 374 flow [2023-11-26 10:41:51,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=374, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2023-11-26 10:41:51,329 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2023-11-26 10:41:51,329 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 374 flow [2023-11-26 10:41:51,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:51,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:51,330 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:51,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:41:51,330 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:51,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash -567084704, now seen corresponding path program 1 times [2023-11-26 10:41:51,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:51,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347429819] [2023-11-26 10:41:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:51,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:51,679 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 10:41:51,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347429819] [2023-11-26 10:41:51,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347429819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:51,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:51,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:51,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460767735] [2023-11-26 10:41:51,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:51,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:51,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:51,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:51,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:51,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:51,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:51,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:51,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:51,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:51,925 INFO L124 PetriNetUnfolderBase]: 49/189 cut-off events. [2023-11-26 10:41:51,925 INFO L125 PetriNetUnfolderBase]: For 319/322 co-relation queries the response was YES. [2023-11-26 10:41:51,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 189 events. 49/189 cut-off events. For 319/322 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 639 event pairs, 18 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 478. Up to 79 conditions per place. [2023-11-26 10:41:51,927 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 47 selfloop transitions, 7 changer transitions 11/69 dead transitions. [2023-11-26 10:41:51,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 69 transitions, 532 flow [2023-11-26 10:41:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:41:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:41:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2023-11-26 10:41:51,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-11-26 10:41:51,929 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 116 transitions. [2023-11-26 10:41:51,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 116 transitions. [2023-11-26 10:41:51,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:51,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 116 transitions. [2023-11-26 10:41:51,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 10:41:51,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 10:41:51,943 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 10:41:51,944 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 374 flow. Second operand 8 states and 116 transitions. [2023-11-26 10:41:51,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 69 transitions, 532 flow [2023-11-26 10:41:51,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 69 transitions, 496 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-26 10:41:51,950 INFO L231 Difference]: Finished difference. Result has 90 places, 50 transitions, 322 flow [2023-11-26 10:41:51,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=322, PETRI_PLACES=90, PETRI_TRANSITIONS=50} [2023-11-26 10:41:51,951 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2023-11-26 10:41:51,952 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 50 transitions, 322 flow [2023-11-26 10:41:51,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:51,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:51,952 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:51,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:41:51,953 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:51,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 963138776, now seen corresponding path program 1 times [2023-11-26 10:41:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377284777] [2023-11-26 10:41:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,394 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 10:41:52,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:52,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377284777] [2023-11-26 10:41:52,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377284777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:52,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:52,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902536338] [2023-11-26 10:41:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:52,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:52,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:52,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:52,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:52,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 50 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:52,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:52,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:52,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:52,655 INFO L124 PetriNetUnfolderBase]: 37/153 cut-off events. [2023-11-26 10:41:52,656 INFO L125 PetriNetUnfolderBase]: For 213/215 co-relation queries the response was YES. [2023-11-26 10:41:52,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 153 events. 37/153 cut-off events. For 213/215 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 420 event pairs, 14 based on Foata normal form. 5/158 useless extension candidates. Maximal degree in co-relation 343. Up to 54 conditions per place. [2023-11-26 10:41:52,657 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 5 changer transitions 16/61 dead transitions. [2023-11-26 10:41:52,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 61 transitions, 456 flow [2023-11-26 10:41:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:41:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:41:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2023-11-26 10:41:52,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2023-11-26 10:41:52,662 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 118 transitions. [2023-11-26 10:41:52,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 118 transitions. [2023-11-26 10:41:52,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:52,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 118 transitions. [2023-11-26 10:41:52,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 10:41:52,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:52,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:52,667 INFO L175 Difference]: Start difference. First operand has 90 places, 50 transitions, 322 flow. Second operand 9 states and 118 transitions. [2023-11-26 10:41:52,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 61 transitions, 456 flow [2023-11-26 10:41:52,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 435 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-26 10:41:52,672 INFO L231 Difference]: Finished difference. Result has 85 places, 43 transitions, 283 flow [2023-11-26 10:41:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=85, PETRI_TRANSITIONS=43} [2023-11-26 10:41:52,673 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2023-11-26 10:41:52,673 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 43 transitions, 283 flow [2023-11-26 10:41:52,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:52,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:52,674 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 10:41:52,674 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:52,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1000911214, now seen corresponding path program 2 times [2023-11-26 10:41:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:52,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316532969] [2023-11-26 10:41:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:52,972 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 10:41:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316532969] [2023-11-26 10:41:52,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316532969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:52,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:52,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723378540] [2023-11-26 10:41:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:52,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:52,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:52,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 43 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:52,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:52,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:52,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:53,135 INFO L124 PetriNetUnfolderBase]: 19/99 cut-off events. [2023-11-26 10:41:53,135 INFO L125 PetriNetUnfolderBase]: For 154/156 co-relation queries the response was YES. [2023-11-26 10:41:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 99 events. 19/99 cut-off events. For 154/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 10 based on Foata normal form. 5/104 useless extension candidates. Maximal degree in co-relation 213. Up to 29 conditions per place. [2023-11-26 10:41:53,137 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 32 selfloop transitions, 3 changer transitions 11/50 dead transitions. [2023-11-26 10:41:53,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 50 transitions, 387 flow [2023-11-26 10:41:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:41:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:41:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2023-11-26 10:41:53,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2023-11-26 10:41:53,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 91 transitions. [2023-11-26 10:41:53,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 91 transitions. [2023-11-26 10:41:53,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:53,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 91 transitions. [2023-11-26 10:41:53,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 10:41:53,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 10:41:53,140 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 10:41:53,140 INFO L175 Difference]: Start difference. First operand has 85 places, 43 transitions, 283 flow. Second operand 7 states and 91 transitions. [2023-11-26 10:41:53,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 50 transitions, 387 flow [2023-11-26 10:41:53,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 360 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-26 10:41:53,144 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 242 flow [2023-11-26 10:41:53,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=242, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2023-11-26 10:41:53,145 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2023-11-26 10:41:53,146 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 242 flow [2023-11-26 10:41:53,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:53,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:41:53,146 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:41:53,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:41:53,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1978195886, now seen corresponding path program 3 times [2023-11-26 10:41:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999960969] [2023-11-26 10:41:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:53,469 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 10:41:53,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:53,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999960969] [2023-11-26 10:41:53,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999960969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:53,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:53,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:41:53,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100580779] [2023-11-26 10:41:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:53,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:53,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2023-11-26 10:41:53,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:53,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:41:53,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2023-11-26 10:41:53,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:41:53,592 INFO L124 PetriNetUnfolderBase]: 9/67 cut-off events. [2023-11-26 10:41:53,593 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-26 10:41:53,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 67 events. 9/67 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 3/70 useless extension candidates. Maximal degree in co-relation 185. Up to 26 conditions per place. [2023-11-26 10:41:53,593 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-11-26 10:41:53,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 42 transitions, 321 flow [2023-11-26 10:41:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:41:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:41:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2023-11-26 10:41:53,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2023-11-26 10:41:53,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 83 transitions. [2023-11-26 10:41:53,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 83 transitions. [2023-11-26 10:41:53,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:41:53,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 83 transitions. [2023-11-26 10:41:53,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:53,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 10:41:53,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 10:41:53,597 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 242 flow. Second operand 7 states and 83 transitions. [2023-11-26 10:41:53,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 42 transitions, 321 flow [2023-11-26 10:41:53,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 42 transitions, 307 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-26 10:41:53,600 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-11-26 10:41:53,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-11-26 10:41:53,601 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-11-26 10:41:53,601 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-11-26 10:41:53,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 10:41:53,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-26 10:41:53,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-26 10:41:53,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-26 10:41:53,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-26 10:41:53,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-11-26 10:41:53,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-26 10:41:53,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-26 10:41:53,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-26 10:41:53,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-26 10:41:53,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-26 10:41:53,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-26 10:41:53,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-26 10:41:53,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-26 10:41:53,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 10:41:53,608 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:53,614 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:41:53,614 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:41:53,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:41:53 BasicIcfg [2023-11-26 10:41:53,620 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:41:53,621 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:41:53,621 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:41:53,621 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:41:53,622 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:41" (3/4) ... [2023-11-26 10:41:53,624 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:41:53,627 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-26 10:41:53,632 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-26 10:41:53,632 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 10:41:53,632 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 10:41:53,721 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:41:53,722 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:41:53,722 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:41:53,723 INFO L158 Benchmark]: Toolchain (without parser) took 14184.25ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 92.0MB in the beginning and 83.0MB in the end (delta: 9.0MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. [2023-11-26 10:41:53,723 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 130.0MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:41:53,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 850.54ms. Allocated memory is still 130.0MB. Free memory was 91.6MB in the beginning and 63.5MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-26 10:41:53,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.33ms. Allocated memory is still 130.0MB. Free memory was 63.5MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:41:53,724 INFO L158 Benchmark]: Boogie Preprocessor took 99.12ms. Allocated memory is still 130.0MB. Free memory was 61.0MB in the beginning and 58.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:41:53,725 INFO L158 Benchmark]: RCFGBuilder took 688.29ms. Allocated memory is still 130.0MB. Free memory was 58.9MB in the beginning and 93.1MB in the end (delta: -34.2MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2023-11-26 10:41:53,725 INFO L158 Benchmark]: TraceAbstraction took 12353.18ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 92.3MB in the beginning and 87.2MB in the end (delta: 5.1MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2023-11-26 10:41:53,725 INFO L158 Benchmark]: Witness Printer took 101.49ms. Allocated memory is still 195.0MB. Free memory was 87.2MB in the beginning and 83.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:41:53,728 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 130.0MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 850.54ms. Allocated memory is still 130.0MB. Free memory was 91.6MB in the beginning and 63.5MB in the end (delta: 28.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.33ms. Allocated memory is still 130.0MB. Free memory was 63.5MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.12ms. Allocated memory is still 130.0MB. Free memory was 61.0MB in the beginning and 58.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 688.29ms. Allocated memory is still 130.0MB. Free memory was 58.9MB in the beginning and 93.1MB in the end (delta: -34.2MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12353.18ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 92.3MB in the beginning and 87.2MB in the end (delta: 5.1MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. * Witness Printer took 101.49ms. Allocated memory is still 195.0MB. Free memory was 87.2MB in the beginning and 83.0MB 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: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 937]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 944]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 931]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: 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, 46 locations, 13 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: 12.2s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 596 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 518 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 310 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2128 IncrementalHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 15 mSDtfsCounter, 2128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=406occurred in iteration=13, InterpolantAutomatonStates: 150, 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, 0.4s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 659 NumberOfCodeBlocks, 629 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 694 ConstructedInterpolants, 3 QuantifiedInterpolants, 3781 SizeOfPredicates, 21 NumberOfNonLiveVariables, 473 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 27 InterpolantComputations, 16 PerfectInterpolantSequences, 1397/1728 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:41:53,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d1665f1-f2c9-46ff-8f0b-eb0de6bedb1f/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