./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu --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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:25,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:25,282 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:45:25,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:25,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:25,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:25,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:25,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:25,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:25,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:25,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:25,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:25,345 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:25,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:25,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:25,347 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:25,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:25,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:25,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:25,349 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:25,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:25,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:25,351 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:45:25,351 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:25,351 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:25,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:25,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:25,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:25,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:25,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:25,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:25,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:25,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:25,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:25,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:25,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:25,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:25,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:25,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:25,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:25,358 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:25,358 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_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2023-11-19 07:45:25,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:25,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:25,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:25,703 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:25,704 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:25,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-19 07:45:28,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:29,369 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:29,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2023-11-19 07:45:29,404 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/data/5b2fa61e1/a6451e1392164137abc26308afd72196/FLAG28554d5be [2023-11-19 07:45:29,423 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/data/5b2fa61e1/a6451e1392164137abc26308afd72196 [2023-11-19 07:45:29,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:29,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:29,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:29,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:29,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:29,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:29" (1/1) ... [2023-11-19 07:45:29,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac22a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:29, skipping insertion in model container [2023-11-19 07:45:29,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:29" (1/1) ... [2023-11-19 07:45:29,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:30,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:30,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:30,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:30,769 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:30,769 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:30,777 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:30,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30 WrapperNode [2023-11-19 07:45:30,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:30,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:30,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:30,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:30,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,894 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 304 [2023-11-19 07:45:30,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:30,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:30,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:30,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:30,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,930 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:30,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:30,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:30,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:30,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (1/1) ... [2023-11-19 07:45:30,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:30,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:30,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:31,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:45:31,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:31,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:45:31,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:31,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:31,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:45:31,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:45:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:31,060 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:45:31,378 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:31,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:31,885 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:32,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:32,004 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-19 07:45:32,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:32 BoogieIcfgContainer [2023-11-19 07:45:32,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:32,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:32,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:32,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:32,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:29" (1/3) ... [2023-11-19 07:45:32,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b556e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:32, skipping insertion in model container [2023-11-19 07:45:32,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:30" (2/3) ... [2023-11-19 07:45:32,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b556e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:32, skipping insertion in model container [2023-11-19 07:45:32,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:32" (3/3) ... [2023-11-19 07:45:32,029 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-11-19 07:45:32,038 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:45:32,047 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:32,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:45:32,048 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:32,179 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:45:32,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 313 transitions, 633 flow [2023-11-19 07:45:32,349 INFO L124 PetriNetUnfolderBase]: 20/328 cut-off events. [2023-11-19 07:45:32,349 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:32,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 328 events. 20/328 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 607 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 220. Up to 4 conditions per place. [2023-11-19 07:45:32,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 313 transitions, 633 flow [2023-11-19 07:45:32,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 309 transitions, 625 flow [2023-11-19 07:45:32,372 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:32,382 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 309 transitions, 625 flow [2023-11-19 07:45:32,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 309 transitions, 625 flow [2023-11-19 07:45:32,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 309 transitions, 625 flow [2023-11-19 07:45:32,465 INFO L124 PetriNetUnfolderBase]: 19/324 cut-off events. [2023-11-19 07:45:32,466 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:32,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 324 events. 19/324 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 592 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 220. Up to 4 conditions per place. [2023-11-19 07:45:32,480 INFO L119 LiptonReduction]: Number of co-enabled transitions 9800 [2023-11-19 07:45:42,297 INFO L134 LiptonReduction]: Checked pairs total: 10527 [2023-11-19 07:45:42,298 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-11-19 07:45:42,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:42,319 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;@780f7882, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:42,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:45:42,322 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:42,323 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:45:42,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:42,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:42,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:45:42,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:45:42,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash 44822, now seen corresponding path program 1 times [2023-11-19 07:45:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:42,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512991718] [2023-11-19 07:45:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:42,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:42,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:42,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512991718] [2023-11-19 07:45:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512991718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:42,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:42,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295715520] [2023-11-19 07:45:42,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:42,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:42,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:42,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 636 [2023-11-19 07:45:42,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:42,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:42,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 636 [2023-11-19 07:45:42,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:43,017 INFO L124 PetriNetUnfolderBase]: 142/283 cut-off events. [2023-11-19 07:45:43,017 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:43,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 283 events. 142/283 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 924 event pairs, 105 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 544. Up to 280 conditions per place. [2023-11-19 07:45:43,022 INFO L140 encePairwiseOnDemand]: 623/636 looper letters, 38 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-19 07:45:43,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 169 flow [2023-11-19 07:45:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-11-19 07:45:43,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638364779874214 [2023-11-19 07:45:43,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-11-19 07:45:43,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-11-19 07:45:43,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:43,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-11-19 07:45:43,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,088 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 111 flow. Second operand 3 states and 885 transitions. [2023-11-19 07:45:43,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 169 flow [2023-11-19 07:45:43,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:43,096 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 93 flow [2023-11-19 07:45:43,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-11-19 07:45:43,104 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -6 predicate places. [2023-11-19 07:45:43,105 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 93 flow [2023-11-19 07:45:43,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:43,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:45:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:43,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:45:43,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash 45339, now seen corresponding path program 1 times [2023-11-19 07:45:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134878262] [2023-11-19 07:45:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:43,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:43,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:43,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134878262] [2023-11-19 07:45:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134878262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:43,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:43,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942705548] [2023-11-19 07:45:43,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:43,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 636 [2023-11-19 07:45:43,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:43,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 636 [2023-11-19 07:45:43,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:43,467 INFO L124 PetriNetUnfolderBase]: 143/285 cut-off events. [2023-11-19 07:45:43,468 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:43,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 285 events. 143/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 935 event pairs, 105 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 560. Up to 284 conditions per place. [2023-11-19 07:45:43,474 INFO L140 encePairwiseOnDemand]: 632/636 looper letters, 39 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-11-19 07:45:43,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 183 flow [2023-11-19 07:45:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2023-11-19 07:45:43,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45964360587002095 [2023-11-19 07:45:43,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2023-11-19 07:45:43,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2023-11-19 07:45:43,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:43,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2023-11-19 07:45:43,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,497 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 93 flow. Second operand 3 states and 877 transitions. [2023-11-19 07:45:43,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 183 flow [2023-11-19 07:45:43,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:43,501 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2023-11-19 07:45:43,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-11-19 07:45:43,503 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-11-19 07:45:43,505 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2023-11-19 07:45:43,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:43,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:45:43,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:43,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:45:43,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:43,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1409928, now seen corresponding path program 1 times [2023-11-19 07:45:43,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:43,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963963301] [2023-11-19 07:45:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:43,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:43,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963963301] [2023-11-19 07:45:43,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963963301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:43,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:43,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:43,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579492816] [2023-11-19 07:45:43,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:43,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 636 [2023-11-19 07:45:43,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:43,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 636 [2023-11-19 07:45:43,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:43,796 INFO L124 PetriNetUnfolderBase]: 143/284 cut-off events. [2023-11-19 07:45:43,796 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:43,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 284 events. 143/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 932 event pairs, 105 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 560. Up to 281 conditions per place. [2023-11-19 07:45:43,798 INFO L140 encePairwiseOnDemand]: 633/636 looper letters, 38 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-19 07:45:43,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 186 flow [2023-11-19 07:45:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2023-11-19 07:45:43,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580712788259958 [2023-11-19 07:45:43,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2023-11-19 07:45:43,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2023-11-19 07:45:43,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:43,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2023-11-19 07:45:43,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,815 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 874 transitions. [2023-11-19 07:45:43,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 186 flow [2023-11-19 07:45:43,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 181 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:43,818 INFO L231 Difference]: Finished difference. Result has 40 places, 42 transitions, 105 flow [2023-11-19 07:45:43,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2023-11-19 07:45:43,820 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-11-19 07:45:43,820 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 105 flow [2023-11-19 07:45:43,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:43,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:43,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:45:43,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:43,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:45:43,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1354634053, now seen corresponding path program 1 times [2023-11-19 07:45:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684957628] [2023-11-19 07:45:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684957628] [2023-11-19 07:45:43,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684957628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:43,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:43,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943655695] [2023-11-19 07:45:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:44,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 636 [2023-11-19 07:45:44,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:44,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 636 [2023-11-19 07:45:44,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:44,152 INFO L124 PetriNetUnfolderBase]: 142/283 cut-off events. [2023-11-19 07:45:44,152 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:45:44,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 283 events. 142/283 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 928 event pairs, 105 based on Foata normal form. 1/156 useless extension candidates. Maximal degree in co-relation 560. Up to 282 conditions per place. [2023-11-19 07:45:44,154 INFO L140 encePairwiseOnDemand]: 633/636 looper letters, 38 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-19 07:45:44,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 179 flow [2023-11-19 07:45:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 860 transitions. [2023-11-19 07:45:44,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073375262054505 [2023-11-19 07:45:44,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 860 transitions. [2023-11-19 07:45:44,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 860 transitions. [2023-11-19 07:45:44,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:44,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 860 transitions. [2023-11-19 07:45:44,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,171 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 105 flow. Second operand 3 states and 860 transitions. [2023-11-19 07:45:44,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 179 flow [2023-11-19 07:45:44,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:44,173 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 99 flow [2023-11-19 07:45:44,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-11-19 07:45:44,174 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-11-19 07:45:44,175 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 99 flow [2023-11-19 07:45:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:44,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:45:44,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:45:44,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:45:44,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:44,177 INFO L85 PathProgramCache]: Analyzing trace with hash -942568008, now seen corresponding path program 1 times [2023-11-19 07:45:44,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510791399] [2023-11-19 07:45:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:44,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:44,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510791399] [2023-11-19 07:45:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510791399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:44,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:44,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401311383] [2023-11-19 07:45:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:44,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:44,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:44,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:44,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:44,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 636 [2023-11-19 07:45:44,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:44,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 636 [2023-11-19 07:45:44,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:44,439 INFO L124 PetriNetUnfolderBase]: 88/203 cut-off events. [2023-11-19 07:45:44,439 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:44,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 203 events. 88/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 735 event pairs, 21 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 385. Up to 102 conditions per place. [2023-11-19 07:45:44,441 INFO L140 encePairwiseOnDemand]: 629/636 looper letters, 60 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2023-11-19 07:45:44,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 65 transitions, 275 flow [2023-11-19 07:45:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-11-19 07:45:44,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46331236897274636 [2023-11-19 07:45:44,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-11-19 07:45:44,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-11-19 07:45:44,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:44,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-11-19 07:45:44,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,457 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 99 flow. Second operand 3 states and 884 transitions. [2023-11-19 07:45:44,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 65 transitions, 275 flow [2023-11-19 07:45:44,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 65 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:44,461 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 88 flow [2023-11-19 07:45:44,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-11-19 07:45:44,462 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -9 predicate places. [2023-11-19 07:45:44,462 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 88 flow [2023-11-19 07:45:44,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:44,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:44,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:45:44,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:45:44,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 430287211, now seen corresponding path program 1 times [2023-11-19 07:45:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:44,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379921224] [2023-11-19 07:45:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379921224] [2023-11-19 07:45:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379921224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879244050] [2023-11-19 07:45:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:44,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:44,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:44,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:45:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:45:44,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:44,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:44,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879244050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:44,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:44,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-19 07:45:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272053223] [2023-11-19 07:45:44,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:44,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:45:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:44,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:45:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:45:45,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 636 [2023-11-19 07:45:45,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 272.5) internal successors, (2180), 8 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:45,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 636 [2023-11-19 07:45:45,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:45,174 INFO L124 PetriNetUnfolderBase]: 88/182 cut-off events. [2023-11-19 07:45:45,175 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-19 07:45:45,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 182 events. 88/182 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 479 event pairs, 63 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 399. Up to 180 conditions per place. [2023-11-19 07:45:45,176 INFO L140 encePairwiseOnDemand]: 633/636 looper letters, 33 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-11-19 07:45:45,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 164 flow [2023-11-19 07:45:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:45:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1121 transitions. [2023-11-19 07:45:45,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406446540880503 [2023-11-19 07:45:45,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1121 transitions. [2023-11-19 07:45:45,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1121 transitions. [2023-11-19 07:45:45,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:45,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1121 transitions. [2023-11-19 07:45:45,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 280.25) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,194 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 636.0) internal successors, (3180), 5 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,195 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 88 flow. Second operand 4 states and 1121 transitions. [2023-11-19 07:45:45,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 164 flow [2023-11-19 07:45:45,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:45,197 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 101 flow [2023-11-19 07:45:45,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-11-19 07:45:45,198 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -7 predicate places. [2023-11-19 07:45:45,198 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 101 flow [2023-11-19 07:45:45,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 272.5) internal successors, (2180), 8 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:45,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:45,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:45:45,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:45,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:45:45,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:45:45,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 492582424, now seen corresponding path program 2 times [2023-11-19 07:45:45,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:45,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506485891] [2023-11-19 07:45:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:45,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:45,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:45:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:45,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:45:45,531 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:45:45,532 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-19 07:45:45,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-19 07:45:45,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-19 07:45:45,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-19 07:45:45,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-19 07:45:45,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-19 07:45:45,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-19 07:45:45,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-19 07:45:45,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-19 07:45:45,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-19 07:45:45,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-19 07:45:45,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-19 07:45:45,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-19 07:45:45,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-19 07:45:45,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-19 07:45:45,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-19 07:45:45,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-19 07:45:45,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-19 07:45:45,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-19 07:45:45,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-19 07:45:45,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-19 07:45:45,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:45:45,538 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-19 07:45:45,541 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:45:45,541 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:45:45,657 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:45:45,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 511 transitions, 1038 flow [2023-11-19 07:45:45,863 INFO L124 PetriNetUnfolderBase]: 38/576 cut-off events. [2023-11-19 07:45:45,863 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:45:45,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 576 events. 38/576 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1927 event pairs, 0 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 434. Up to 8 conditions per place. [2023-11-19 07:45:45,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 484 places, 511 transitions, 1038 flow [2023-11-19 07:45:45,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 484 places, 511 transitions, 1038 flow [2023-11-19 07:45:45,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:45,890 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 511 transitions, 1038 flow [2023-11-19 07:45:45,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 511 transitions, 1038 flow [2023-11-19 07:45:45,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 511 transitions, 1038 flow [2023-11-19 07:45:46,048 INFO L124 PetriNetUnfolderBase]: 38/576 cut-off events. [2023-11-19 07:45:46,048 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:45:46,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 576 events. 38/576 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1927 event pairs, 0 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 434. Up to 8 conditions per place. [2023-11-19 07:45:46,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 103880 [2023-11-19 07:46:01,146 INFO L134 LiptonReduction]: Checked pairs total: 107546 [2023-11-19 07:46:01,147 INFO L136 LiptonReduction]: Total number of compositions: 509 [2023-11-19 07:46:01,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:01,150 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;@780f7882, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:01,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 07:46:01,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:01,152 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:46:01,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:01,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:01,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:46:01,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:46:01,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash 83445, now seen corresponding path program 1 times [2023-11-19 07:46:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:01,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141526848] [2023-11-19 07:46:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:01,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141526848] [2023-11-19 07:46:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141526848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:01,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:01,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815626415] [2023-11-19 07:46:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:01,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:01,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:01,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1020 [2023-11-19 07:46:01,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:01,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1020 [2023-11-19 07:46:01,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:04,093 INFO L124 PetriNetUnfolderBase]: 14527/21296 cut-off events. [2023-11-19 07:46:04,093 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-11-19 07:46:04,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42673 conditions, 21296 events. 14527/21296 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 129223 event pairs, 11718 based on Foata normal form. 0/13326 useless extension candidates. Maximal degree in co-relation 35395. Up to 21226 conditions per place. [2023-11-19 07:46:04,261 INFO L140 encePairwiseOnDemand]: 1006/1020 looper letters, 82 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-19 07:46:04,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 360 flow [2023-11-19 07:46:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:04,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1461 transitions. [2023-11-19 07:46:04,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774509803921569 [2023-11-19 07:46:04,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1461 transitions. [2023-11-19 07:46:04,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1461 transitions. [2023-11-19 07:46:04,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:04,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1461 transitions. [2023-11-19 07:46:04,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 487.0) internal successors, (1461), 3 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:04,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:04,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:04,287 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 216 flow. Second operand 3 states and 1461 transitions. [2023-11-19 07:46:04,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 360 flow [2023-11-19 07:46:04,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:04,294 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 196 flow [2023-11-19 07:46:04,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2023-11-19 07:46:04,297 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -4 predicate places. [2023-11-19 07:46:04,297 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 196 flow [2023-11-19 07:46:04,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:04,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:46:04,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:46:04,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:46:04,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash 84267, now seen corresponding path program 1 times [2023-11-19 07:46:04,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:04,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194709948] [2023-11-19 07:46:04,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194709948] [2023-11-19 07:46:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194709948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:04,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:04,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:04,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076815515] [2023-11-19 07:46:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:04,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:04,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:04,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1020 [2023-11-19 07:46:04,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:04,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:04,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1020 [2023-11-19 07:46:04,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:07,190 INFO L124 PetriNetUnfolderBase]: 14528/21299 cut-off events. [2023-11-19 07:46:07,190 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-11-19 07:46:07,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42683 conditions, 21299 events. 14528/21299 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 129229 event pairs, 11718 based on Foata normal form. 0/13329 useless extension candidates. Maximal degree in co-relation 42659. Up to 21231 conditions per place. [2023-11-19 07:46:07,298 INFO L140 encePairwiseOnDemand]: 1016/1020 looper letters, 84 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-19 07:46:07,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 378 flow [2023-11-19 07:46:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1453 transitions. [2023-11-19 07:46:07,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748366013071895 [2023-11-19 07:46:07,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1453 transitions. [2023-11-19 07:46:07,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1453 transitions. [2023-11-19 07:46:07,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:07,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1453 transitions. [2023-11-19 07:46:07,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 484.3333333333333) internal successors, (1453), 3 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:07,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:07,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:07,319 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 196 flow. Second operand 3 states and 1453 transitions. [2023-11-19 07:46:07,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 378 flow [2023-11-19 07:46:07,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 91 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:07,323 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 211 flow [2023-11-19 07:46:07,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2023-11-19 07:46:07,324 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2023-11-19 07:46:07,324 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 211 flow [2023-11-19 07:46:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:07,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:07,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:46:07,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:46:07,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:46:07,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 84148, now seen corresponding path program 1 times [2023-11-19 07:46:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:07,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738558085] [2023-11-19 07:46:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738558085] [2023-11-19 07:46:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738558085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:07,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:07,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735265226] [2023-11-19 07:46:07,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:07,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:07,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:07,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:07,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1020 [2023-11-19 07:46:07,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:07,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:07,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1020 [2023-11-19 07:46:07,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:09,619 INFO L124 PetriNetUnfolderBase]: 14528/21297 cut-off events. [2023-11-19 07:46:09,619 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-11-19 07:46:09,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42685 conditions, 21297 events. 14528/21297 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 129232 event pairs, 11718 based on Foata normal form. 2/13329 useless extension candidates. Maximal degree in co-relation 42659. Up to 21227 conditions per place. [2023-11-19 07:46:09,737 INFO L140 encePairwiseOnDemand]: 1017/1020 looper letters, 82 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-11-19 07:46:09,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 379 flow [2023-11-19 07:46:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1449 transitions. [2023-11-19 07:46:09,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47352941176470587 [2023-11-19 07:46:09,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1449 transitions. [2023-11-19 07:46:09,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1449 transitions. [2023-11-19 07:46:09,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:09,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1449 transitions. [2023-11-19 07:46:09,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.0) internal successors, (1449), 3 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:09,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:09,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:09,779 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 211 flow. Second operand 3 states and 1449 transitions. [2023-11-19 07:46:09,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 379 flow [2023-11-19 07:46:09,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 89 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:09,784 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 210 flow [2023-11-19 07:46:09,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2023-11-19 07:46:09,786 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2023-11-19 07:46:09,787 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 210 flow [2023-11-19 07:46:09,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 455.6666666666667) internal successors, (1367), 3 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:09,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:09,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:46:09,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:46:09,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:46:09,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2620005, now seen corresponding path program 1 times [2023-11-19 07:46:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245427791] [2023-11-19 07:46:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:09,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:09,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245427791] [2023-11-19 07:46:09,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245427791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863767356] [2023-11-19 07:46:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:09,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:09,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:09,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:46:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:10,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:10,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:10,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:10,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863767356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:10,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:46:10,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:46:10,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990893482] [2023-11-19 07:46:10,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:10,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:10,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:10,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 1020 [2023-11-19 07:46:10,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 455.75) internal successors, (1823), 4 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:10,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:10,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 1020 [2023-11-19 07:46:10,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:12,350 INFO L124 PetriNetUnfolderBase]: 14528/21296 cut-off events. [2023-11-19 07:46:12,350 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2023-11-19 07:46:12,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42682 conditions, 21296 events. 14528/21296 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 129306 event pairs, 11718 based on Foata normal form. 0/13329 useless extension candidates. Maximal degree in co-relation 42659. Up to 21227 conditions per place. [2023-11-19 07:46:12,462 INFO L140 encePairwiseOnDemand]: 1016/1020 looper letters, 80 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-11-19 07:46:12,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 88 transitions, 374 flow [2023-11-19 07:46:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1905 transitions. [2023-11-19 07:46:12,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46691176470588236 [2023-11-19 07:46:12,470 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1905 transitions. [2023-11-19 07:46:12,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1905 transitions. [2023-11-19 07:46:12,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:12,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1905 transitions. [2023-11-19 07:46:12,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 476.25) internal successors, (1905), 4 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1020.0) internal successors, (5100), 5 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1020.0) internal successors, (5100), 5 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,488 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 210 flow. Second operand 4 states and 1905 transitions. [2023-11-19 07:46:12,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 88 transitions, 374 flow [2023-11-19 07:46:12,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:12,491 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 208 flow [2023-11-19 07:46:12,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2023-11-19 07:46:12,492 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -3 predicate places. [2023-11-19 07:46:12,492 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 208 flow [2023-11-19 07:46:12,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 455.75) internal successors, (1823), 4 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:12,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:12,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db425d-5eef-4990-b11b-ce36b088f1df/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:46:12,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 07:46:12,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash 735807410, now seen corresponding path program 1 times [2023-11-19 07:46:12,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:12,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234165101] [2023-11-19 07:46:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:12,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:12,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:12,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234165101] [2023-11-19 07:46:12,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234165101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:12,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612298438] [2023-11-19 07:46:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:12,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:12,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 449 out of 1020 [2023-11-19 07:46:12,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:12,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:12,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 449 of 1020 [2023-11-19 07:46:12,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand