./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/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_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/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_c3715fcf-cd60-4411-a2b0-02a634c8ee09/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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:56,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:56,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:47:56,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:56,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:56,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:56,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:56,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:56,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:56,282 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:56,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:56,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:56,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:56,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:56,287 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:56,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:56,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:56,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:56,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:56,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:56,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:56,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:56,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:56,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:56,291 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:47:56,291 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:56,291 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:56,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:56,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:56,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:56,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:56,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:56,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:56,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:56,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:56,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:56,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:56,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:56,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:56,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:56,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:56,297 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:56,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:56,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:56,298 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_c3715fcf-cd60-4411-a2b0-02a634c8ee09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2023-11-26 11:47:56,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:56,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:56,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:56,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:56,665 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:56,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-26 11:47:59,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:00,270 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:00,271 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-26 11:48:00,290 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/data/295061029/b9ed2a87681f4eda976418a20424b918/FLAGd850fe3a5 [2023-11-26 11:48:00,311 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/data/295061029/b9ed2a87681f4eda976418a20424b918 [2023-11-26 11:48:00,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:00,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:00,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:00,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:00,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:00,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:00" (1/1) ... [2023-11-26 11:48:00,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d856a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:00, skipping insertion in model container [2023-11-26 11:48:00,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:00" (1/1) ... [2023-11-26 11:48:00,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:00,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:00,914 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:01,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:01,136 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:01,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01 WrapperNode [2023-11-26 11:48:01,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:01,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:01,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:01,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:01,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,221 INFO L138 Inliner]: procedures = 272, calls = 65, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 251 [2023-11-26 11:48:01,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:01,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:01,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:01,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:01,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,278 INFO L175 MemorySlicer]: Split 35 memory accesses to 4 slices as follows [2, 5, 26, 2]. 74 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 5, 16, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2023-11-26 11:48:01,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:01,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:01,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:01,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:01,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:01,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:01,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:01,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:01,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:48:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:48:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:48:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:48:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:48:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:48:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:48:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:48:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:48:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:48:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:48:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:48:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:48:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:48:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:48:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:01,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:01,411 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:48:01,624 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:01,627 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:02,026 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:02,393 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:02,394 INFO L309 CfgBuilder]: Removed 22 assume(true) statements. [2023-11-26 11:48:02,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:02 BoogieIcfgContainer [2023-11-26 11:48:02,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:02,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:02,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:02,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:02,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:00" (1/3) ... [2023-11-26 11:48:02,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d43695a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:02, skipping insertion in model container [2023-11-26 11:48:02,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01" (2/3) ... [2023-11-26 11:48:02,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d43695a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:02, skipping insertion in model container [2023-11-26 11:48:02,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:02" (3/3) ... [2023-11-26 11:48:02,403 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-11-26 11:48:02,412 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:48:02,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:02,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-26 11:48:02,423 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:48:02,481 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:48:02,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 119 transitions, 245 flow [2023-11-26 11:48:02,600 INFO L124 PetriNetUnfolderBase]: 36/167 cut-off events. [2023-11-26 11:48:02,600 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:48:02,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 36/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 621 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 97. Up to 8 conditions per place. [2023-11-26 11:48:02,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 119 transitions, 245 flow [2023-11-26 11:48:02,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 117 transitions, 241 flow [2023-11-26 11:48:02,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:02,632 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;@66df91de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:02,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-26 11:48:02,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:02,636 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-26 11:48:02,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:02,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:02,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:48:02,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:48:02,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:02,643 INFO L85 PathProgramCache]: Analyzing trace with hash 20144826, now seen corresponding path program 1 times [2023-11-26 11:48:02,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:02,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275982849] [2023-11-26 11:48:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:02,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:02,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:02,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275982849] [2023-11-26 11:48:02,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275982849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:02,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:02,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738674162] [2023-11-26 11:48:02,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:02,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:02,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:03,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 119 [2023-11-26 11:48:03,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:03,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:03,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 119 [2023-11-26 11:48:03,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:03,742 INFO L124 PetriNetUnfolderBase]: 905/2805 cut-off events. [2023-11-26 11:48:03,742 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:48:03,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 2805 events. 905/2805 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22679 event pairs, 782 based on Foata normal form. 546/3017 useless extension candidates. Maximal degree in co-relation 2235. Up to 924 conditions per place. [2023-11-26 11:48:03,771 INFO L140 encePairwiseOnDemand]: 93/119 looper letters, 92 selfloop transitions, 5 changer transitions 0/141 dead transitions. [2023-11-26 11:48:03,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 141 transitions, 489 flow [2023-11-26 11:48:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:48:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-11-26 11:48:03,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6596638655462185 [2023-11-26 11:48:03,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-11-26 11:48:03,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-11-26 11:48:03,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:03,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-11-26 11:48:03,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:03,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:03,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:03,803 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 241 flow. Second operand 4 states and 314 transitions. [2023-11-26 11:48:03,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 141 transitions, 489 flow [2023-11-26 11:48:03,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:03,812 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 218 flow [2023-11-26 11:48:03,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-11-26 11:48:03,819 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 3 predicate places. [2023-11-26 11:48:03,819 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 218 flow [2023-11-26 11:48:03,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:03,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:03,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:48:03,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:03,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:48:03,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash 20144816, now seen corresponding path program 1 times [2023-11-26 11:48:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149671864] [2023-11-26 11:48:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:03,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:03,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149671864] [2023-11-26 11:48:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149671864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:03,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:03,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:03,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767752364] [2023-11-26 11:48:03,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:03,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:03,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 119 [2023-11-26 11:48:03,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:03,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:03,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 119 [2023-11-26 11:48:03,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:04,379 INFO L124 PetriNetUnfolderBase]: 905/2811 cut-off events. [2023-11-26 11:48:04,379 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 11:48:04,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4680 conditions, 2811 events. 905/2811 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22696 event pairs, 799 based on Foata normal form. 1/2478 useless extension candidates. Maximal degree in co-relation 2338. Up to 1794 conditions per place. [2023-11-26 11:48:04,400 INFO L140 encePairwiseOnDemand]: 116/119 looper letters, 51 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-11-26 11:48:04,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 322 flow [2023-11-26 11:48:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-26 11:48:04,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182072829131653 [2023-11-26 11:48:04,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-26 11:48:04,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-26 11:48:04,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:04,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-26 11:48:04,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,407 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 218 flow. Second operand 3 states and 185 transitions. [2023-11-26 11:48:04,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 322 flow [2023-11-26 11:48:04,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:04,458 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 215 flow [2023-11-26 11:48:04,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2023-11-26 11:48:04,459 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 2 predicate places. [2023-11-26 11:48:04,459 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 215 flow [2023-11-26 11:48:04,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:04,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:48:04,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:48:04,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:48:04,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash 624489940, now seen corresponding path program 1 times [2023-11-26 11:48:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:04,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155135818] [2023-11-26 11:48:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:04,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155135818] [2023-11-26 11:48:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155135818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:04,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:04,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:04,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649814150] [2023-11-26 11:48:04,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:04,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:04,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 119 [2023-11-26 11:48:04,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:04,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 119 [2023-11-26 11:48:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:04,931 INFO L124 PetriNetUnfolderBase]: 905/2810 cut-off events. [2023-11-26 11:48:04,931 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 11:48:04,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 2810 events. 905/2810 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22686 event pairs, 799 based on Foata normal form. 1/2477 useless extension candidates. Maximal degree in co-relation 2338. Up to 1794 conditions per place. [2023-11-26 11:48:04,951 INFO L140 encePairwiseOnDemand]: 116/119 looper letters, 50 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-26 11:48:04,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 317 flow [2023-11-26 11:48:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-26 11:48:04,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154061624649859 [2023-11-26 11:48:04,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-26 11:48:04,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-26 11:48:04,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:04,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-26 11:48:04,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,960 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 215 flow. Second operand 3 states and 184 transitions. [2023-11-26 11:48:04,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 95 transitions, 317 flow [2023-11-26 11:48:04,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:04,967 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 213 flow [2023-11-26 11:48:04,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2023-11-26 11:48:04,969 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 1 predicate places. [2023-11-26 11:48:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 213 flow [2023-11-26 11:48:04,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:04,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:04,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:48:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:48:04,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:48:04,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash 624490317, now seen corresponding path program 1 times [2023-11-26 11:48:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957821184] [2023-11-26 11:48:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:05,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:05,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957821184] [2023-11-26 11:48:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957821184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:05,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:05,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:05,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687133840] [2023-11-26 11:48:05,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:05,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:05,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:05,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 119 [2023-11-26 11:48:05,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:05,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:05,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 119 [2023-11-26 11:48:05,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:05,572 INFO L124 PetriNetUnfolderBase]: 905/2802 cut-off events. [2023-11-26 11:48:05,572 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 11:48:05,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 2802 events. 905/2802 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22608 event pairs, 782 based on Foata normal form. 1/2470 useless extension candidates. Maximal degree in co-relation 2331. Up to 1735 conditions per place. [2023-11-26 11:48:05,592 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 54 selfloop transitions, 7 changer transitions 8/111 dead transitions. [2023-11-26 11:48:05,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 111 transitions, 383 flow [2023-11-26 11:48:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:48:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2023-11-26 11:48:05,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-11-26 11:48:05,594 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 289 transitions. [2023-11-26 11:48:05,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 289 transitions. [2023-11-26 11:48:05,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:05,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 289 transitions. [2023-11-26 11:48:05,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:05,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:05,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:05,600 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 213 flow. Second operand 5 states and 289 transitions. [2023-11-26 11:48:05,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 111 transitions, 383 flow [2023-11-26 11:48:05,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:05,606 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 221 flow [2023-11-26 11:48:05,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2023-11-26 11:48:05,608 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 2 predicate places. [2023-11-26 11:48:05,608 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 221 flow [2023-11-26 11:48:05,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:05,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:05,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:05,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:48:05,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:48:05,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:05,610 INFO L85 PathProgramCache]: Analyzing trace with hash -21440575, now seen corresponding path program 1 times [2023-11-26 11:48:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:05,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793922539] [2023-11-26 11:48:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:05,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:05,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793922539] [2023-11-26 11:48:05,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793922539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:05,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:05,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864709903] [2023-11-26 11:48:05,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:05,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:05,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:05,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 119 [2023-11-26 11:48:05,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:05,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:05,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 119 [2023-11-26 11:48:05,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:06,160 INFO L124 PetriNetUnfolderBase]: 902/2654 cut-off events. [2023-11-26 11:48:06,161 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-26 11:48:06,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 2654 events. 902/2654 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21141 event pairs, 258 based on Foata normal form. 36/2409 useless extension candidates. Maximal degree in co-relation 2232. Up to 1657 conditions per place. [2023-11-26 11:48:06,177 INFO L140 encePairwiseOnDemand]: 113/119 looper letters, 84 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-11-26 11:48:06,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 127 transitions, 461 flow [2023-11-26 11:48:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:48:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2023-11-26 11:48:06,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567226890756303 [2023-11-26 11:48:06,179 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 265 transitions. [2023-11-26 11:48:06,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 265 transitions. [2023-11-26 11:48:06,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:06,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 265 transitions. [2023-11-26 11:48:06,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:06,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:06,183 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:06,183 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 221 flow. Second operand 4 states and 265 transitions. [2023-11-26 11:48:06,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 127 transitions, 461 flow [2023-11-26 11:48:06,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 447 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:48:06,189 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 213 flow [2023-11-26 11:48:06,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2023-11-26 11:48:06,190 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 0 predicate places. [2023-11-26 11:48:06,190 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 213 flow [2023-11-26 11:48:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:06,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:06,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:48:06,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:48:06,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1214655456, now seen corresponding path program 1 times [2023-11-26 11:48:06,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:06,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906157656] [2023-11-26 11:48:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:06,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:06,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:48:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:48:06,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:48:06,248 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:48:06,249 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-26 11:48:06,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-26 11:48:06,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-26 11:48:06,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-26 11:48:06,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-26 11:48:06,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-26 11:48:06,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-26 11:48:06,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-26 11:48:06,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-26 11:48:06,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-26 11:48:06,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-26 11:48:06,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-26 11:48:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-26 11:48:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-26 11:48:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-26 11:48:06,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-26 11:48:06,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-26 11:48:06,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-26 11:48:06,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-26 11:48:06,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-26 11:48:06,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-26 11:48:06,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:48:06,256 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 11:48:06,259 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:48:06,259 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:48:06,293 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:48:06,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 165 transitions, 346 flow [2023-11-26 11:48:06,326 INFO L124 PetriNetUnfolderBase]: 60/281 cut-off events. [2023-11-26 11:48:06,326 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:48:06,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 281 events. 60/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1241 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 169. Up to 12 conditions per place. [2023-11-26 11:48:06,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 165 transitions, 346 flow [2023-11-26 11:48:06,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 164 transitions, 344 flow [2023-11-26 11:48:06,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:06,337 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;@66df91de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:06,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-26 11:48:06,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:48:06,339 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-26 11:48:06,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:48:06,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:06,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:48:06,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:48:06,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash 25224186, now seen corresponding path program 1 times [2023-11-26 11:48:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:06,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840569740] [2023-11-26 11:48:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:06,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:06,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840569740] [2023-11-26 11:48:06,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840569740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:06,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:06,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:06,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162465887] [2023-11-26 11:48:06,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:06,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:06,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2023-11-26 11:48:06,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 164 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 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 11:48:06,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:06,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2023-11-26 11:48:06,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:13,887 INFO L124 PetriNetUnfolderBase]: 33331/70889 cut-off events. [2023-11-26 11:48:13,887 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2023-11-26 11:48:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120722 conditions, 70889 events. 33331/70889 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 2061. Compared 794263 event pairs, 29784 based on Foata normal form. 16085/79267 useless extension candidates. Maximal degree in co-relation 52121. Up to 25515 conditions per place. [2023-11-26 11:48:14,354 INFO L140 encePairwiseOnDemand]: 129/165 looper letters, 132 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2023-11-26 11:48:14,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 198 transitions, 700 flow [2023-11-26 11:48:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:48:14,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-11-26 11:48:14,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6696969696969697 [2023-11-26 11:48:14,359 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-11-26 11:48:14,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-11-26 11:48:14,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:14,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-11-26 11:48:14,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:14,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:14,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:14,366 INFO L175 Difference]: Start difference. First operand has 133 places, 164 transitions, 344 flow. Second operand 4 states and 442 transitions. [2023-11-26 11:48:14,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 198 transitions, 700 flow [2023-11-26 11:48:14,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 198 transitions, 700 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:48:14,376 INFO L231 Difference]: Finished difference. Result has 136 places, 134 transitions, 301 flow [2023-11-26 11:48:14,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=136, PETRI_TRANSITIONS=134} [2023-11-26 11:48:14,379 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2023-11-26 11:48:14,380 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 301 flow [2023-11-26 11:48:14,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 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 11:48:14,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:14,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:48:14,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:48:14,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:48:14,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash 25224176, now seen corresponding path program 1 times [2023-11-26 11:48:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:14,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098019685] [2023-11-26 11:48:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:14,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098019685] [2023-11-26 11:48:14,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098019685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:14,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:14,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:14,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895273742] [2023-11-26 11:48:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:14,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:14,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2023-11-26 11:48:14,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:14,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:14,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2023-11-26 11:48:14,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:20,571 INFO L124 PetriNetUnfolderBase]: 33345/71165 cut-off events. [2023-11-26 11:48:20,571 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2023-11-26 11:48:20,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122103 conditions, 71165 events. 33345/71165 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 2061. Compared 799375 event pairs, 30430 based on Foata normal form. 1/63335 useless extension candidates. Maximal degree in co-relation 60041. Up to 49654 conditions per place. [2023-11-26 11:48:21,195 INFO L140 encePairwiseOnDemand]: 162/165 looper letters, 71 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-11-26 11:48:21,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 133 transitions, 445 flow [2023-11-26 11:48:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:21,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-11-26 11:48:21,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171717171717172 [2023-11-26 11:48:21,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-11-26 11:48:21,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-11-26 11:48:21,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:21,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-11-26 11:48:21,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:21,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:21,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:21,203 INFO L175 Difference]: Start difference. First operand has 136 places, 134 transitions, 301 flow. Second operand 3 states and 256 transitions. [2023-11-26 11:48:21,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 133 transitions, 445 flow [2023-11-26 11:48:21,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 133 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:21,210 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 298 flow [2023-11-26 11:48:21,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2023-11-26 11:48:21,211 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2023-11-26 11:48:21,211 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 298 flow [2023-11-26 11:48:21,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:21,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:21,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:48:21,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:48:21,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:48:21,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash 781950642, now seen corresponding path program 1 times [2023-11-26 11:48:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:21,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367638560] [2023-11-26 11:48:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:21,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367638560] [2023-11-26 11:48:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367638560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:21,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:21,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:21,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202845053] [2023-11-26 11:48:21,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:21,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:21,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:21,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:21,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:21,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2023-11-26 11:48:21,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:21,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:21,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2023-11-26 11:48:21,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:27,396 INFO L124 PetriNetUnfolderBase]: 33331/70887 cut-off events. [2023-11-26 11:48:27,396 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2023-11-26 11:48:27,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121449 conditions, 70887 events. 33331/70887 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 794373 event pairs, 29784 based on Foata normal form. 1/63118 useless extension candidates. Maximal degree in co-relation 61381. Up to 48245 conditions per place. [2023-11-26 11:48:28,013 INFO L140 encePairwiseOnDemand]: 158/165 looper letters, 99 selfloop transitions, 7 changer transitions 0/166 dead transitions. [2023-11-26 11:48:28,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 166 transitions, 576 flow [2023-11-26 11:48:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:48:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2023-11-26 11:48:28,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49818181818181817 [2023-11-26 11:48:28,017 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2023-11-26 11:48:28,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2023-11-26 11:48:28,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:28,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2023-11-26 11:48:28,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:28,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:28,032 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:28,032 INFO L175 Difference]: Start difference. First operand has 135 places, 133 transitions, 298 flow. Second operand 5 states and 411 transitions. [2023-11-26 11:48:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 166 transitions, 576 flow [2023-11-26 11:48:28,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 166 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:28,040 INFO L231 Difference]: Finished difference. Result has 136 places, 132 transitions, 306 flow [2023-11-26 11:48:28,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=136, PETRI_TRANSITIONS=132} [2023-11-26 11:48:28,043 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2023-11-26 11:48:28,044 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 132 transitions, 306 flow [2023-11-26 11:48:28,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:28,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:28,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:48:28,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:48:28,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:48:28,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 781950265, now seen corresponding path program 1 times [2023-11-26 11:48:28,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504237790] [2023-11-26 11:48:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:28,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:28,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504237790] [2023-11-26 11:48:28,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504237790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:28,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:28,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:28,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787222] [2023-11-26 11:48:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:28,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2023-11-26 11:48:28,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 132 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:28,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:28,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2023-11-26 11:48:28,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:34,084 INFO L124 PetriNetUnfolderBase]: 33345/71163 cut-off events. [2023-11-26 11:48:34,084 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2023-11-26 11:48:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122464 conditions, 71163 events. 33345/71163 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 799093 event pairs, 30430 based on Foata normal form. 1/63333 useless extension candidates. Maximal degree in co-relation 58958. Up to 49654 conditions per place. [2023-11-26 11:48:34,380 INFO L140 encePairwiseOnDemand]: 162/165 looper letters, 70 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-26 11:48:34,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 131 transitions, 448 flow [2023-11-26 11:48:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:48:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-11-26 11:48:34,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-26 11:48:34,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-11-26 11:48:34,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-11-26 11:48:34,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:34,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-11-26 11:48:34,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:34,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:34,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:34,386 INFO L175 Difference]: Start difference. First operand has 136 places, 132 transitions, 306 flow. Second operand 3 states and 255 transitions. [2023-11-26 11:48:34,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 131 transitions, 448 flow [2023-11-26 11:48:34,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 131 transitions, 434 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:48:34,427 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 294 flow [2023-11-26 11:48:34,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2023-11-26 11:48:34,428 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 0 predicate places. [2023-11-26 11:48:34,428 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 294 flow [2023-11-26 11:48:34,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:34,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:34,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:34,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:48:34,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:48:34,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash 832787469, now seen corresponding path program 1 times [2023-11-26 11:48:34,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:34,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553126185] [2023-11-26 11:48:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:34,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:34,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:34,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553126185] [2023-11-26 11:48:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553126185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:34,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500185454] [2023-11-26 11:48:34,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:34,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2023-11-26 11:48:34,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:34,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:34,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2023-11-26 11:48:34,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:40,245 INFO L124 PetriNetUnfolderBase]: 34928/71619 cut-off events. [2023-11-26 11:48:40,245 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2023-11-26 11:48:40,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124876 conditions, 71619 events. 34928/71619 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 786544 event pairs, 15793 based on Foata normal form. 36/63821 useless extension candidates. Maximal degree in co-relation 63165. Up to 52226 conditions per place. [2023-11-26 11:48:40,542 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 108 selfloop transitions, 3 changer transitions 0/168 dead transitions. [2023-11-26 11:48:40,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 168 transitions, 590 flow [2023-11-26 11:48:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:48:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-11-26 11:48:40,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409090909090909 [2023-11-26 11:48:40,545 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-11-26 11:48:40,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-11-26 11:48:40,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:40,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-11-26 11:48:40,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:40,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:40,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:40,550 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 294 flow. Second operand 4 states and 357 transitions. [2023-11-26 11:48:40,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 168 transitions, 590 flow [2023-11-26 11:48:40,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 168 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:48:40,557 INFO L231 Difference]: Finished difference. Result has 136 places, 133 transitions, 314 flow [2023-11-26 11:48:40,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=136, PETRI_TRANSITIONS=133} [2023-11-26 11:48:40,559 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2023-11-26 11:48:40,559 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 133 transitions, 314 flow [2023-11-26 11:48:40,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:40,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:40,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:40,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:48:40,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:48:40,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1068295806, now seen corresponding path program 1 times [2023-11-26 11:48:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816919765] [2023-11-26 11:48:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816919765] [2023-11-26 11:48:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816919765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741975562] [2023-11-26 11:48:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:40,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:40,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:40,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:40,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:48:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:40,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:48:40,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:40,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:40,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741975562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:40,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:40,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-26 11:48:40,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010133903] [2023-11-26 11:48:40,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:40,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:48:40,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:48:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:40,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2023-11-26 11:48:40,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 133 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:40,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:40,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2023-11-26 11:48:40,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:48:46,523 INFO L124 PetriNetUnfolderBase]: 32849/63434 cut-off events. [2023-11-26 11:48:46,523 INFO L125 PetriNetUnfolderBase]: For 2164/2164 co-relation queries the response was YES. [2023-11-26 11:48:46,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116880 conditions, 63434 events. 32849/63434 cut-off events. For 2164/2164 co-relation queries the response was YES. Maximal size of possible extension queue 1868. Compared 667251 event pairs, 1224 based on Foata normal form. 648/58352 useless extension candidates. Maximal degree in co-relation 56698. Up to 40753 conditions per place. [2023-11-26 11:48:46,797 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 172 selfloop transitions, 6 changer transitions 0/235 dead transitions. [2023-11-26 11:48:46,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 235 transitions, 872 flow [2023-11-26 11:48:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:48:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:48:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2023-11-26 11:48:46,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494949494949495 [2023-11-26 11:48:46,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2023-11-26 11:48:46,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2023-11-26 11:48:46,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:46,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2023-11-26 11:48:46,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:46,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:46,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:46,804 INFO L175 Difference]: Start difference. First operand has 136 places, 133 transitions, 314 flow. Second operand 6 states and 544 transitions. [2023-11-26 11:48:46,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 235 transitions, 872 flow [2023-11-26 11:48:46,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 235 transitions, 870 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:48:46,816 INFO L231 Difference]: Finished difference. Result has 139 places, 132 transitions, 320 flow [2023-11-26 11:48:46,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=139, PETRI_TRANSITIONS=132} [2023-11-26 11:48:46,817 INFO L281 CegarLoopForPetriNet]: 133 programPoint places, 6 predicate places. [2023-11-26 11:48:46,817 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 132 transitions, 320 flow [2023-11-26 11:48:46,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:46,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:46,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:46,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:47,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3715fcf-cd60-4411-a2b0-02a634c8ee09/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:47,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:48:47,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1242567514, now seen corresponding path program 1 times [2023-11-26 11:48:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:47,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212119819] [2023-11-26 11:48:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:47,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:47,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212119819] [2023-11-26 11:48:47,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212119819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:47,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:47,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:47,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610005980] [2023-11-26 11:48:47,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:47,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:47,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:47,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2023-11-26 11:48:47,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 132 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:47,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:47,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2023-11-26 11:48:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand