./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/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_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/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_c330597a-25f4-45be-94bc-88851a82bb46/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 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:12,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:12,348 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:41:12,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:12,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:12,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:12,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:12,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:12,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:12,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:12,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:12,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:12,392 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:12,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:12,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:12,394 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:12,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:12,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:12,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:12,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:12,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:12,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:12,397 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:41:12,398 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:41:12,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:12,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:12,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:12,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:12,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:12,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:12,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:12,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:12,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:12,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:12,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:12,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:12,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:12,403 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:12,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:12,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:12,403 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:12,404 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_c330597a-25f4-45be-94bc-88851a82bb46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f73d75edf25d106d657bdc186907312ee3ef2bf4e5da547c0ac3641991b71d [2023-11-19 07:41:12,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:12,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:12,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:12,766 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:12,767 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:12,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-11-19 07:41:15,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:16,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:16,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/sv-benchmarks/c/weaver/test-easy6.wvr.c [2023-11-19 07:41:16,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/data/82841f4dc/a5d29431fcaf43d8ae155c421d7c74bb/FLAGf32f78042 [2023-11-19 07:41:16,230 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/data/82841f4dc/a5d29431fcaf43d8ae155c421d7c74bb [2023-11-19 07:41:16,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:16,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:16,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:16,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:16,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:16,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb8dadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16, skipping insertion in model container [2023-11-19 07:41:16,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:16,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:16,462 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:16,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:16,495 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:16,495 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:41:16,504 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:16,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16 WrapperNode [2023-11-19 07:41:16,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:16,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:16,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:16,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:16,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,550 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 134 [2023-11-19 07:41:16,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:16,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:16,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:16,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:16,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:16,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:16,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:16,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:16,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (1/1) ... [2023-11-19 07:41:16,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:16,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:16,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:16,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:41:16,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:41:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:41:16,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:41:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:41:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:41:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:41:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:41:16,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:16,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:41:16,694 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 07:41:16,850 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:16,852 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:17,194 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:17,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:17,331 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:41:17,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:17 BoogieIcfgContainer [2023-11-19 07:41:17,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:17,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:17,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:17,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:17,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:16" (1/3) ... [2023-11-19 07:41:17,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57db323c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:17, skipping insertion in model container [2023-11-19 07:41:17,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:16" (2/3) ... [2023-11-19 07:41:17,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57db323c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:17, skipping insertion in model container [2023-11-19 07:41:17,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:17" (3/3) ... [2023-11-19 07:41:17,347 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-11-19 07:41:17,358 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:41:17,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:17,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:41:17,370 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:41:17,499 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:41:17,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 91 transitions, 196 flow [2023-11-19 07:41:17,626 INFO L124 PetriNetUnfolderBase]: 1/89 cut-off events. [2023-11-19 07:41:17,627 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:41:17,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 1/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-19 07:41:17,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 91 transitions, 196 flow [2023-11-19 07:41:17,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 67 transitions, 143 flow [2023-11-19 07:41:17,640 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:41:17,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 67 transitions, 143 flow [2023-11-19 07:41:17,653 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 67 transitions, 143 flow [2023-11-19 07:41:17,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 67 transitions, 143 flow [2023-11-19 07:41:17,674 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2023-11-19 07:41:17,674 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:41:17,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 67 events. 0/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-19 07:41:17,676 INFO L119 LiptonReduction]: Number of co-enabled transitions 992 [2023-11-19 07:41:19,769 INFO L134 LiptonReduction]: Checked pairs total: 5725 [2023-11-19 07:41:19,769 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-11-19 07:41:19,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:19,792 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;@74cd9804, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:19,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 07:41:19,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:41:19,796 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:41:19,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:41:19,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:19,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:41:19,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:19,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash 12270768, now seen corresponding path program 1 times [2023-11-19 07:41:19,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:19,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579835162] [2023-11-19 07:41:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:19,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:20,090 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 07:41:20,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579835162] [2023-11-19 07:41:20,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579835162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:20,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168603787] [2023-11-19 07:41:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:20,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:20,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:20,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 133 [2023-11-19 07:41:20,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:20,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 133 [2023-11-19 07:41:20,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:20,367 INFO L124 PetriNetUnfolderBase]: 328/663 cut-off events. [2023-11-19 07:41:20,367 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-19 07:41:20,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 663 events. 328/663 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3230 event pairs, 154 based on Foata normal form. 12/593 useless extension candidates. Maximal degree in co-relation 1184. Up to 339 conditions per place. [2023-11-19 07:41:20,378 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-19 07:41:20,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 176 flow [2023-11-19 07:41:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-11-19 07:41:20,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040100250626567 [2023-11-19 07:41:20,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-11-19 07:41:20,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-11-19 07:41:20,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:20,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-11-19 07:41:20,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 07:41:20,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 07:41:20,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 07:41:20,411 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 75 flow. Second operand 3 states and 241 transitions. [2023-11-19 07:41:20,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 176 flow [2023-11-19 07:41:20,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 169 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:20,418 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 83 flow [2023-11-19 07:41:20,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-11-19 07:41:20,424 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-11-19 07:41:20,424 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 83 flow [2023-11-19 07:41:20,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:20,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:20,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:41:20,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:20,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:20,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:20,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1092378296, now seen corresponding path program 1 times [2023-11-19 07:41:20,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:20,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244586118] [2023-11-19 07:41:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:20,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:20,515 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 07:41:20,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:20,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244586118] [2023-11-19 07:41:20,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244586118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:20,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:20,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:20,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296541054] [2023-11-19 07:41:20,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:20,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:20,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:20,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 133 [2023-11-19 07:41:20,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 07:41:20,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:20,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 133 [2023-11-19 07:41:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:20,662 INFO L124 PetriNetUnfolderBase]: 308/631 cut-off events. [2023-11-19 07:41:20,662 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-19 07:41:20,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 631 events. 308/631 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3156 event pairs, 134 based on Foata normal form. 8/562 useless extension candidates. Maximal degree in co-relation 975. Up to 339 conditions per place. [2023-11-19 07:41:20,669 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-19 07:41:20,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 189 flow [2023-11-19 07:41:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-11-19 07:41:20,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040100250626567 [2023-11-19 07:41:20,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-11-19 07:41:20,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-11-19 07:41:20,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:20,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-11-19 07:41:20,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 07:41:20,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 07:41:20,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 07:41:20,679 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 83 flow. Second operand 3 states and 241 transitions. [2023-11-19 07:41:20,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 189 flow [2023-11-19 07:41:20,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:20,682 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 90 flow [2023-11-19 07:41:20,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-11-19 07:41:20,683 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-19 07:41:20,684 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 90 flow [2023-11-19 07:41:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 07:41:20,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:20,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:20,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:20,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash 740371218, now seen corresponding path program 1 times [2023-11-19 07:41:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:20,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974142369] [2023-11-19 07:41:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:20,847 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 07:41:20,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:20,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974142369] [2023-11-19 07:41:20,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974142369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:20,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:20,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855774170] [2023-11-19 07:41:20,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:20,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:20,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:20,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2023-11-19 07:41:20,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:20,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:20,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2023-11-19 07:41:20,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:21,145 INFO L124 PetriNetUnfolderBase]: 468/947 cut-off events. [2023-11-19 07:41:21,145 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-11-19 07:41:21,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 947 events. 468/947 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5129 event pairs, 104 based on Foata normal form. 0/847 useless extension candidates. Maximal degree in co-relation 1782. Up to 300 conditions per place. [2023-11-19 07:41:21,157 INFO L140 encePairwiseOnDemand]: 124/133 looper letters, 58 selfloop transitions, 11 changer transitions 4/78 dead transitions. [2023-11-19 07:41:21,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 347 flow [2023-11-19 07:41:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 515 transitions. [2023-11-19 07:41:21,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531686358754028 [2023-11-19 07:41:21,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 515 transitions. [2023-11-19 07:41:21,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 515 transitions. [2023-11-19 07:41:21,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:21,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 515 transitions. [2023-11-19 07:41:21,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 07:41:21,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:21,169 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:21,170 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 90 flow. Second operand 7 states and 515 transitions. [2023-11-19 07:41:21,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 347 flow [2023-11-19 07:41:21,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:21,174 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 148 flow [2023-11-19 07:41:21,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-11-19 07:41:21,175 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-11-19 07:41:21,176 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 148 flow [2023-11-19 07:41:21,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:21,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:21,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:21,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:21,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:21,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 738987377, now seen corresponding path program 1 times [2023-11-19 07:41:21,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:21,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375502161] [2023-11-19 07:41:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:21,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:21,254 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 07:41:21,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375502161] [2023-11-19 07:41:21,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375502161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:21,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:21,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:21,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598040926] [2023-11-19 07:41:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:21,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2023-11-19 07:41:21,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:21,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:21,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2023-11-19 07:41:21,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:21,536 INFO L124 PetriNetUnfolderBase]: 449/912 cut-off events. [2023-11-19 07:41:21,536 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2023-11-19 07:41:21,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 912 events. 449/912 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4856 event pairs, 33 based on Foata normal form. 12/830 useless extension candidates. Maximal degree in co-relation 1940. Up to 303 conditions per place. [2023-11-19 07:41:21,545 INFO L140 encePairwiseOnDemand]: 124/133 looper letters, 59 selfloop transitions, 14 changer transitions 3/81 dead transitions. [2023-11-19 07:41:21,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 407 flow [2023-11-19 07:41:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 517 transitions. [2023-11-19 07:41:21,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5553168635875403 [2023-11-19 07:41:21,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 517 transitions. [2023-11-19 07:41:21,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 517 transitions. [2023-11-19 07:41:21,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:21,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 517 transitions. [2023-11-19 07:41:21,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 07:41:21,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:21,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:21,556 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 148 flow. Second operand 7 states and 517 transitions. [2023-11-19 07:41:21,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 407 flow [2023-11-19 07:41:21,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 383 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:21,565 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 174 flow [2023-11-19 07:41:21,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-11-19 07:41:21,566 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2023-11-19 07:41:21,566 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 174 flow [2023-11-19 07:41:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:21,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:21,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:21,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:41:21,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:21,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 740387102, now seen corresponding path program 1 times [2023-11-19 07:41:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578393703] [2023-11-19 07:41:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:21,635 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 07:41:21,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:21,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578393703] [2023-11-19 07:41:21,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578393703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:21,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:21,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041276006] [2023-11-19 07:41:21,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:21,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:21,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:21,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2023-11-19 07:41:21,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:21,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:21,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2023-11-19 07:41:21,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:21,938 INFO L124 PetriNetUnfolderBase]: 588/1193 cut-off events. [2023-11-19 07:41:21,938 INFO L125 PetriNetUnfolderBase]: For 647/657 co-relation queries the response was YES. [2023-11-19 07:41:21,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 1193 events. 588/1193 cut-off events. For 647/657 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6909 event pairs, 200 based on Foata normal form. 10/1092 useless extension candidates. Maximal degree in co-relation 2414. Up to 498 conditions per place. [2023-11-19 07:41:21,950 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 62 selfloop transitions, 14 changer transitions 2/84 dead transitions. [2023-11-19 07:41:21,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 442 flow [2023-11-19 07:41:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 513 transitions. [2023-11-19 07:41:21,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2023-11-19 07:41:21,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 513 transitions. [2023-11-19 07:41:21,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 513 transitions. [2023-11-19 07:41:21,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:21,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 513 transitions. [2023-11-19 07:41:21,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 07:41:21,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:21,961 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:21,962 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 174 flow. Second operand 7 states and 513 transitions. [2023-11-19 07:41:21,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 442 flow [2023-11-19 07:41:21,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 390 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-19 07:41:21,972 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 209 flow [2023-11-19 07:41:21,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=209, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-19 07:41:21,976 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2023-11-19 07:41:21,976 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 209 flow [2023-11-19 07:41:21,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:21,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:21,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:21,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:41:21,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:21,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash 740387101, now seen corresponding path program 1 times [2023-11-19 07:41:21,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:21,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135966211] [2023-11-19 07:41:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:22,086 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 07:41:22,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:22,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135966211] [2023-11-19 07:41:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135966211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:22,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:22,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:22,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454863701] [2023-11-19 07:41:22,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:22,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:22,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:22,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:22,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:22,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2023-11-19 07:41:22,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:22,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:22,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2023-11-19 07:41:22,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:22,371 INFO L124 PetriNetUnfolderBase]: 567/1162 cut-off events. [2023-11-19 07:41:22,372 INFO L125 PetriNetUnfolderBase]: For 647/657 co-relation queries the response was YES. [2023-11-19 07:41:22,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 1162 events. 567/1162 cut-off events. For 647/657 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6717 event pairs, 57 based on Foata normal form. 22/1075 useless extension candidates. Maximal degree in co-relation 2450. Up to 348 conditions per place. [2023-11-19 07:41:22,384 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 59 selfloop transitions, 17 changer transitions 1/83 dead transitions. [2023-11-19 07:41:22,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 438 flow [2023-11-19 07:41:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:41:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 513 transitions. [2023-11-19 07:41:22,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2023-11-19 07:41:22,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 513 transitions. [2023-11-19 07:41:22,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 513 transitions. [2023-11-19 07:41:22,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:22,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 513 transitions. [2023-11-19 07:41:22,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 07:41:22,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:22,394 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 07:41:22,394 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 209 flow. Second operand 7 states and 513 transitions. [2023-11-19 07:41:22,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 438 flow [2023-11-19 07:41:22,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:41:22,403 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 230 flow [2023-11-19 07:41:22,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-11-19 07:41:22,406 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2023-11-19 07:41:22,410 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 230 flow [2023-11-19 07:41:22,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 07:41:22,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:22,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:22,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:41:22,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:22,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:22,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2117819056, now seen corresponding path program 1 times [2023-11-19 07:41:22,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:22,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027032048] [2023-11-19 07:41:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:22,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:22,489 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 07:41:22,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:22,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027032048] [2023-11-19 07:41:22,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027032048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:22,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:22,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:41:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047161524] [2023-11-19 07:41:22,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:22,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:22,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:22,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:22,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 133 [2023-11-19 07:41:22,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 07:41:22,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:22,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 133 [2023-11-19 07:41:22,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:22,648 INFO L124 PetriNetUnfolderBase]: 360/769 cut-off events. [2023-11-19 07:41:22,649 INFO L125 PetriNetUnfolderBase]: For 850/858 co-relation queries the response was YES. [2023-11-19 07:41:22,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 769 events. 360/769 cut-off events. For 850/858 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4079 event pairs, 160 based on Foata normal form. 58/791 useless extension candidates. Maximal degree in co-relation 1782. Up to 469 conditions per place. [2023-11-19 07:41:22,656 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 49 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2023-11-19 07:41:22,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 413 flow [2023-11-19 07:41:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:41:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-19 07:41:22,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6115288220551378 [2023-11-19 07:41:22,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-19 07:41:22,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-19 07:41:22,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:22,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-19 07:41:22,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 07:41:22,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 07:41:22,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 07:41:22,667 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 230 flow. Second operand 3 states and 244 transitions. [2023-11-19 07:41:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 413 flow [2023-11-19 07:41:22,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 372 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-19 07:41:22,676 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 215 flow [2023-11-19 07:41:22,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-11-19 07:41:22,677 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2023-11-19 07:41:22,677 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 215 flow [2023-11-19 07:41:22,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 07:41:22,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:22,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:22,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:41:22,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:22,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash 100199048, now seen corresponding path program 1 times [2023-11-19 07:41:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:22,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786196033] [2023-11-19 07:41:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:22,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:22,770 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 07:41:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:22,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786196033] [2023-11-19 07:41:22,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786196033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:22,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:22,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334618115] [2023-11-19 07:41:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:22,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 133 [2023-11-19 07:41:22,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:22,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:22,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 133 [2023-11-19 07:41:22,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:22,985 INFO L124 PetriNetUnfolderBase]: 350/747 cut-off events. [2023-11-19 07:41:22,985 INFO L125 PetriNetUnfolderBase]: For 541/557 co-relation queries the response was YES. [2023-11-19 07:41:22,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 747 events. 350/747 cut-off events. For 541/557 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4025 event pairs, 154 based on Foata normal form. 16/745 useless extension candidates. Maximal degree in co-relation 1160. Up to 279 conditions per place. [2023-11-19 07:41:22,993 INFO L140 encePairwiseOnDemand]: 126/133 looper letters, 56 selfloop transitions, 5 changer transitions 1/69 dead transitions. [2023-11-19 07:41:22,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 447 flow [2023-11-19 07:41:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:41:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 437 transitions. [2023-11-19 07:41:22,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2023-11-19 07:41:22,997 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 437 transitions. [2023-11-19 07:41:22,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 437 transitions. [2023-11-19 07:41:22,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:22,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 437 transitions. [2023-11-19 07:41:23,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 07:41:23,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 07:41:23,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 07:41:23,003 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 215 flow. Second operand 6 states and 437 transitions. [2023-11-19 07:41:23,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 447 flow [2023-11-19 07:41:23,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:41:23,008 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 223 flow [2023-11-19 07:41:23,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-11-19 07:41:23,009 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2023-11-19 07:41:23,009 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 223 flow [2023-11-19 07:41:23,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:23,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:23,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:23,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:41:23,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:23,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1306132341, now seen corresponding path program 1 times [2023-11-19 07:41:23,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:23,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405760606] [2023-11-19 07:41:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,092 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 07:41:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405760606] [2023-11-19 07:41:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405760606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379460450] [2023-11-19 07:41:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:23,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:23,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 133 [2023-11-19 07:41:23,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:23,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:23,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 133 [2023-11-19 07:41:23,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:23,238 INFO L124 PetriNetUnfolderBase]: 320/687 cut-off events. [2023-11-19 07:41:23,238 INFO L125 PetriNetUnfolderBase]: For 716/732 co-relation queries the response was YES. [2023-11-19 07:41:23,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 687 events. 320/687 cut-off events. For 716/732 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3686 event pairs, 142 based on Foata normal form. 34/703 useless extension candidates. Maximal degree in co-relation 1090. Up to 279 conditions per place. [2023-11-19 07:41:23,244 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 37 selfloop transitions, 4 changer transitions 19/67 dead transitions. [2023-11-19 07:41:23,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 449 flow [2023-11-19 07:41:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:41:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 435 transitions. [2023-11-19 07:41:23,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451127819548872 [2023-11-19 07:41:23,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 435 transitions. [2023-11-19 07:41:23,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 435 transitions. [2023-11-19 07:41:23,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:23,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 435 transitions. [2023-11-19 07:41:23,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 07:41:23,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 07:41:23,253 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 07:41:23,253 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 223 flow. Second operand 6 states and 435 transitions. [2023-11-19 07:41:23,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 449 flow [2023-11-19 07:41:23,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 437 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:41:23,257 INFO L231 Difference]: Finished difference. Result has 61 places, 33 transitions, 160 flow [2023-11-19 07:41:23,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=61, PETRI_TRANSITIONS=33} [2023-11-19 07:41:23,258 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2023-11-19 07:41:23,259 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 33 transitions, 160 flow [2023-11-19 07:41:23,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:23,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:23,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:23,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:41:23,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:23,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:23,261 INFO L85 PathProgramCache]: Analyzing trace with hash 783561145, now seen corresponding path program 1 times [2023-11-19 07:41:23,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:23,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90087563] [2023-11-19 07:41:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:23,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,342 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 07:41:23,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:23,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90087563] [2023-11-19 07:41:23,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90087563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:23,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:23,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:23,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312575538] [2023-11-19 07:41:23,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:23,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:23,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 133 [2023-11-19 07:41:23,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 33 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:23,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:23,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 133 [2023-11-19 07:41:23,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:23,457 INFO L124 PetriNetUnfolderBase]: 216/447 cut-off events. [2023-11-19 07:41:23,457 INFO L125 PetriNetUnfolderBase]: For 412/420 co-relation queries the response was YES. [2023-11-19 07:41:23,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 447 events. 216/447 cut-off events. For 412/420 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2051 event pairs, 142 based on Foata normal form. 8/449 useless extension candidates. Maximal degree in co-relation 724. Up to 275 conditions per place. [2023-11-19 07:41:23,462 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 31 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-19 07:41:23,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 249 flow [2023-11-19 07:41:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:41:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2023-11-19 07:41:23,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2023-11-19 07:41:23,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 287 transitions. [2023-11-19 07:41:23,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 287 transitions. [2023-11-19 07:41:23,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:23,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 287 transitions. [2023-11-19 07:41:23,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:23,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 07:41:23,468 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 07:41:23,468 INFO L175 Difference]: Start difference. First operand has 61 places, 33 transitions, 160 flow. Second operand 4 states and 287 transitions. [2023-11-19 07:41:23,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 249 flow [2023-11-19 07:41:23,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 225 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:41:23,472 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 137 flow [2023-11-19 07:41:23,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2023-11-19 07:41:23,473 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-11-19 07:41:23,474 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 137 flow [2023-11-19 07:41:23,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:23,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:23,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:23,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:41:23,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 07:41:23,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:23,475 INFO L85 PathProgramCache]: Analyzing trace with hash 783561146, now seen corresponding path program 1 times [2023-11-19 07:41:23,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:23,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464070921] [2023-11-19 07:41:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:23,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:23,542 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 07:41:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464070921] [2023-11-19 07:41:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464070921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:23,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:23,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585833503] [2023-11-19 07:41:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:23,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:23,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 133 [2023-11-19 07:41:23,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:23,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:23,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 133 [2023-11-19 07:41:23,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:23,649 INFO L124 PetriNetUnfolderBase]: 204/423 cut-off events. [2023-11-19 07:41:23,650 INFO L125 PetriNetUnfolderBase]: For 186/194 co-relation queries the response was YES. [2023-11-19 07:41:23,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 423 events. 204/423 cut-off events. For 186/194 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1952 event pairs, 136 based on Foata normal form. 20/437 useless extension candidates. Maximal degree in co-relation 691. Up to 275 conditions per place. [2023-11-19 07:41:23,652 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-11-19 07:41:23,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 223 flow [2023-11-19 07:41:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:41:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2023-11-19 07:41:23,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375939849624061 [2023-11-19 07:41:23,654 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2023-11-19 07:41:23,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2023-11-19 07:41:23,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:23,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2023-11-19 07:41:23,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 07:41:23,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 07:41:23,658 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 07:41:23,658 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 137 flow. Second operand 4 states and 286 transitions. [2023-11-19 07:41:23,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 223 flow [2023-11-19 07:41:23,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:23,660 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-11-19 07:41:23,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-11-19 07:41:23,661 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-11-19 07:41:23,662 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-11-19 07:41:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 07:41:23,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-19 07:41:23,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-19 07:41:23,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-19 07:41:23,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-19 07:41:23,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-19 07:41:23,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-19 07:41:23,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-19 07:41:23,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-19 07:41:23,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-11-19 07:41:23,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-19 07:41:23,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-19 07:41:23,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-19 07:41:23,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-19 07:41:23,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-19 07:41:23,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-19 07:41:23,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-19 07:41:23,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-19 07:41:23,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-19 07:41:23,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:41:23,669 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:23,675 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:41:23,675 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:41:23,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:41:23 BasicIcfg [2023-11-19 07:41:23,679 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:41:23,680 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:41:23,680 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:41:23,680 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:41:23,681 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:17" (3/4) ... [2023-11-19 07:41:23,682 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:41:23,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:41:23,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:41:23,690 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-19 07:41:23,691 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:41:23,691 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:41:23,691 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:41:23,779 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:41:23,780 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:41:23,780 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:41:23,781 INFO L158 Benchmark]: Toolchain (without parser) took 7545.78ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 92.4MB in the beginning and 170.5MB in the end (delta: -78.0MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-11-19 07:41:23,781 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:23,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.29ms. Allocated memory is still 136.3MB. Free memory was 91.9MB in the beginning and 80.8MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:41:23,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.67ms. Allocated memory is still 136.3MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:23,782 INFO L158 Benchmark]: Boogie Preprocessor took 48.38ms. Allocated memory is still 136.3MB. Free memory was 78.8MB in the beginning and 77.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:23,783 INFO L158 Benchmark]: RCFGBuilder took 733.10ms. Allocated memory is still 136.3MB. Free memory was 77.7MB in the beginning and 57.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:41:23,783 INFO L158 Benchmark]: TraceAbstraction took 6341.45ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 56.8MB in the beginning and 174.7MB in the end (delta: -117.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:41:23,784 INFO L158 Benchmark]: Witness Printer took 100.37ms. Allocated memory is still 222.3MB. Free memory was 174.7MB in the beginning and 170.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:41:23,786 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.29ms. Allocated memory is still 136.3MB. Free memory was 91.9MB in the beginning and 80.8MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.67ms. Allocated memory is still 136.3MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.38ms. Allocated memory is still 136.3MB. Free memory was 78.8MB in the beginning and 77.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 733.10ms. Allocated memory is still 136.3MB. Free memory was 77.7MB in the beginning and 57.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6341.45ms. Allocated memory was 136.3MB in the beginning and 222.3MB in the end (delta: 86.0MB). Free memory was 56.8MB in the beginning and 174.7MB in the end (delta: -117.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 100.37ms. Allocated memory is still 222.3MB. Free memory was 174.7MB in the beginning and 170.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 74 PlacesBefore, 40 PlacesAfterwards, 67 TransitionsBefore, 33 TransitionsAfterwards, 992 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 5725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3634, independent: 3351, independent conditional: 0, independent unconditional: 3351, dependent: 283, dependent conditional: 0, dependent unconditional: 283, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 565, independent: 531, independent conditional: 0, independent unconditional: 531, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3634, independent: 2820, independent conditional: 0, independent unconditional: 2820, dependent: 249, dependent conditional: 0, dependent unconditional: 249, unknown: 565, unknown conditional: 0, unknown unconditional: 565] , Statistics on independence cache: Total cache size (in pairs): 226, Positive cache size: 202, Positive conditional cache size: 0, Positive unconditional cache size: 202, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 655 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 588 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 878 IncrementalHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 35 mSDtfsCounter, 878 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=6, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:41:23,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c330597a-25f4-45be-94bc-88851a82bb46/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE