./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --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_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/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_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/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_488142ab-77fd-41fd-946d-314173f63ee4/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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:01:39,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:01:39,354 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:01:39,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:01:39,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:01:39,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:01:39,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:01:39,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:01:39,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:01:39,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:01:39,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:01:39,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:01:39,419 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:01:39,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:01:39,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:01:39,422 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:01:39,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:01:39,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:01:39,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:01:39,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:01:39,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:01:39,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:01:39,425 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:01:39,426 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:01:39,426 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:01:39,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:01:39,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:01:39,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:01:39,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:01:39,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:01:39,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:39,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:01:39,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:01:39,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:01:39,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:01:39,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:01:39,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:01:39,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:01:39,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:01:39,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:01:39,434 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:01:39,435 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_488142ab-77fd-41fd-946d-314173f63ee4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2023-11-19 08:01:39,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:01:39,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:01:39,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:01:39,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:01:39,826 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:01:39,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-19 08:01:43,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:01:43,475 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:01:43,475 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-19 08:01:43,496 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/data/76217d233/d0d1ad956bde498b96ceeb479cc24705/FLAG0419f2f51 [2023-11-19 08:01:43,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/data/76217d233/d0d1ad956bde498b96ceeb479cc24705 [2023-11-19 08:01:43,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:01:43,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:01:43,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:43,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:01:43,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:01:43,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:43" (1/1) ... [2023-11-19 08:01:43,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43baee03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:43, skipping insertion in model container [2023-11-19 08:01:43,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:01:43" (1/1) ... [2023-11-19 08:01:43,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:01:44,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:44,173 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:01:44,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:01:44,378 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:01:44,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44 WrapperNode [2023-11-19 08:01:44,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:01:44,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:44,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:01:44,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:01:44,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,517 INFO L138 Inliner]: procedures = 278, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2023-11-19 08:01:44,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:01:44,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:01:44,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:01:44,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:01:44,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:01:44,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:01:44,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:01:44,607 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:01:44,608 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (1/1) ... [2023-11-19 08:01:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:01:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:44,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:44,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_488142ab-77fd-41fd-946d-314173f63ee4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:01:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:01:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:01:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 08:01:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 08:01:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:01:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:01:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 08:01:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 08:01:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:01:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:01:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:01:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:01:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:01:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:01:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:01:44,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:01:44,700 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 08:01:44,918 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:01:44,920 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:01:45,338 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:01:45,352 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:01:45,352 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-19 08:01:45,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:45 BoogieIcfgContainer [2023-11-19 08:01:45,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:01:45,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:01:45,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:01:45,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:01:45,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:01:43" (1/3) ... [2023-11-19 08:01:45,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f49cd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:45, skipping insertion in model container [2023-11-19 08:01:45,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:01:44" (2/3) ... [2023-11-19 08:01:45,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f49cd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:45, skipping insertion in model container [2023-11-19 08:01:45,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:45" (3/3) ... [2023-11-19 08:01:45,367 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-19 08:01:45,377 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:01:45,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:01:45,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 08:01:45,389 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:01:45,517 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 08:01:45,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 251 transitions, 522 flow [2023-11-19 08:01:45,900 INFO L124 PetriNetUnfolderBase]: 54/489 cut-off events. [2023-11-19 08:01:45,916 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:01:45,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 489 events. 54/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2093 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-19 08:01:45,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 251 transitions, 522 flow [2023-11-19 08:01:45,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 251 transitions, 522 flow [2023-11-19 08:01:45,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:45,988 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 251 transitions, 522 flow [2023-11-19 08:01:45,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 251 transitions, 522 flow [2023-11-19 08:01:45,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 251 transitions, 522 flow [2023-11-19 08:01:46,110 INFO L124 PetriNetUnfolderBase]: 54/489 cut-off events. [2023-11-19 08:01:46,110 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:01:46,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 489 events. 54/489 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2093 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-19 08:01:46,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 20614 [2023-11-19 08:01:54,659 INFO L134 LiptonReduction]: Checked pairs total: 33629 [2023-11-19 08:01:54,660 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-11-19 08:01:54,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:54,687 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;@5b175519, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:54,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 08:01:54,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:01:54,691 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-19 08:01:54,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:54,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:54,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:01:54,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:01:54,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash 30111447, now seen corresponding path program 1 times [2023-11-19 08:01:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:54,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789235784] [2023-11-19 08:01:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:54,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:55,138 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 08:01:55,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:55,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789235784] [2023-11-19 08:01:55,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789235784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:55,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:55,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:01:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465789893] [2023-11-19 08:01:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:55,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:55,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:55,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 469 [2023-11-19 08:01:55,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 08:01:55,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:55,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 469 [2023-11-19 08:01:55,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:56,285 INFO L124 PetriNetUnfolderBase]: 3979/6470 cut-off events. [2023-11-19 08:01:56,285 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-19 08:01:56,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12785 conditions, 6470 events. 3979/6470 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 37358 event pairs, 2189 based on Foata normal form. 200/4986 useless extension candidates. Maximal degree in co-relation 11543. Up to 6220 conditions per place. [2023-11-19 08:01:56,338 INFO L140 encePairwiseOnDemand]: 452/469 looper letters, 61 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-19 08:01:56,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 286 flow [2023-11-19 08:01:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-19 08:01:56,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266524520255863 [2023-11-19 08:01:56,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-19 08:01:56,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-19 08:01:56,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:56,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-19 08:01:56,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 08:01:56,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 08:01:56,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 469.0) internal successors, (1876), 4 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 08:01:56,384 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 172 flow. Second operand 3 states and 741 transitions. [2023-11-19 08:01:56,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 286 flow [2023-11-19 08:01:56,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:01:56,406 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 152 flow [2023-11-19 08:01:56,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=469, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-11-19 08:01:56,412 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2023-11-19 08:01:56,412 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 152 flow [2023-11-19 08:01:56,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 08:01:56,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:56,414 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:01:56,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:01:56,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 08:01:56,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1127636174, now seen corresponding path program 1 times [2023-11-19 08:01:56,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:56,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762246493] [2023-11-19 08:01:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:56,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:56,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:56,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:56,541 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:01:56,544 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-19 08:01:56,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-19 08:01:56,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-19 08:01:56,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-19 08:01:56,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-19 08:01:56,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-19 08:01:56,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-19 08:01:56,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-19 08:01:56,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-19 08:01:56,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-19 08:01:56,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-19 08:01:56,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-19 08:01:56,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-19 08:01:56,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2023-11-19 08:01:56,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-19 08:01:56,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-19 08:01:56,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-19 08:01:56,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-19 08:01:56,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:01:56,559 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:01:56,562 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:01:56,562 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:01:56,675 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 08:01:56,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 385 transitions, 814 flow [2023-11-19 08:01:57,125 INFO L124 PetriNetUnfolderBase]: 197/1496 cut-off events. [2023-11-19 08:01:57,126 INFO L125 PetriNetUnfolderBase]: For 72/80 co-relation queries the response was YES. [2023-11-19 08:01:57,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 1496 events. 197/1496 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9794 event pairs, 2 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 918. Up to 32 conditions per place. [2023-11-19 08:01:57,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 385 transitions, 814 flow [2023-11-19 08:01:57,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 385 transitions, 814 flow [2023-11-19 08:01:57,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:57,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 350 places, 385 transitions, 814 flow [2023-11-19 08:01:57,195 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 350 places, 385 transitions, 814 flow [2023-11-19 08:01:57,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 385 transitions, 814 flow [2023-11-19 08:01:57,623 INFO L124 PetriNetUnfolderBase]: 197/1496 cut-off events. [2023-11-19 08:01:57,623 INFO L125 PetriNetUnfolderBase]: For 72/80 co-relation queries the response was YES. [2023-11-19 08:01:57,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 1496 events. 197/1496 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9794 event pairs, 2 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 918. Up to 32 conditions per place. [2023-11-19 08:01:57,751 INFO L119 LiptonReduction]: Number of co-enabled transitions 76408 [2023-11-19 08:02:08,265 INFO L134 LiptonReduction]: Checked pairs total: 143766 [2023-11-19 08:02:08,265 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-11-19 08:02:08,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:08,269 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;@5b175519, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:08,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 08:02:08,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:08,274 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-19 08:02:08,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:08,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:08,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:02:08,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 08:02:08,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:08,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1733215193, now seen corresponding path program 1 times [2023-11-19 08:02:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625018214] [2023-11-19 08:02:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:08,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:08,344 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 08:02:08,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:08,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625018214] [2023-11-19 08:02:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625018214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163062211] [2023-11-19 08:02:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:08,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:08,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:08,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:08,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 708 [2023-11-19 08:02:08,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 129 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states 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 08:02:08,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:08,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 708 [2023-11-19 08:02:08,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand