./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/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_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/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_5e657de8-f066-4284-9b3b-56ac036cbe55/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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:21,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:21,739 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:03:21,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:21,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:21,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:21,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:21,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:21,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:21,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:21,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:21,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:21,797 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:21,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:21,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:21,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:21,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:21,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:21,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:21,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:21,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:21,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:21,803 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:03:21,804 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:21,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:21,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:21,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:21,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:21,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:21,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:21,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:21,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:21,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:21,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:21,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:21,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:21,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:21,810 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:21,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:21,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:21,811 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:21,812 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_5e657de8-f066-4284-9b3b-56ac036cbe55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2023-11-19 08:03:22,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:22,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:22,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:22,206 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:22,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:22,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2023-11-19 08:03:25,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:25,711 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:25,711 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2023-11-19 08:03:25,728 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/data/6e2333f07/1f9049eb338d41029e361172bcea855f/FLAG37c04c4ca [2023-11-19 08:03:25,745 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/data/6e2333f07/1f9049eb338d41029e361172bcea855f [2023-11-19 08:03:25,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:25,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:25,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:25,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:25,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:25,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:25" (1/1) ... [2023-11-19 08:03:25,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5ac04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:25, skipping insertion in model container [2023-11-19 08:03:25,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:25" (1/1) ... [2023-11-19 08:03:25,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:26,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:26,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:26,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:26,522 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:26,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26 WrapperNode [2023-11-19 08:03:26,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:26,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:26,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:26,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:26,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,607 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 227 [2023-11-19 08:03:26,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:26,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:26,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:26,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:26,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:26,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:26,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:26,679 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:26,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:26,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:26,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:26,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e657de8-f066-4284-9b3b-56ac036cbe55/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:03:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 08:03:26,771 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 08:03:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:03:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 08:03:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 08:03:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:26,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:26,775 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 08:03:26,924 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:26,926 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:27,356 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:27,370 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:27,370 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-19 08:03:27,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:27 BoogieIcfgContainer [2023-11-19 08:03:27,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:27,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:27,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:27,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:27,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:25" (1/3) ... [2023-11-19 08:03:27,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6430c856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:27, skipping insertion in model container [2023-11-19 08:03:27,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (2/3) ... [2023-11-19 08:03:27,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6430c856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:27, skipping insertion in model container [2023-11-19 08:03:27,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:27" (3/3) ... [2023-11-19 08:03:27,386 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-11-19 08:03:27,395 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:03:27,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:27,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 08:03:27,408 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:03:27,525 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 08:03:27,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 253 transitions, 526 flow [2023-11-19 08:03:27,769 INFO L124 PetriNetUnfolderBase]: 61/460 cut-off events. [2023-11-19 08:03:27,769 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:03:27,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 460 events. 61/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2083 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 245. Up to 8 conditions per place. [2023-11-19 08:03:27,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 253 transitions, 526 flow [2023-11-19 08:03:27,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 253 transitions, 526 flow [2023-11-19 08:03:27,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:27,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 253 transitions, 526 flow [2023-11-19 08:03:27,841 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 253 transitions, 526 flow [2023-11-19 08:03:27,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 253 transitions, 526 flow [2023-11-19 08:03:27,956 INFO L124 PetriNetUnfolderBase]: 61/460 cut-off events. [2023-11-19 08:03:27,956 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:03:27,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 460 events. 61/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2083 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 245. Up to 8 conditions per place. [2023-11-19 08:03:27,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 28000 [2023-11-19 08:03:33,458 INFO L134 LiptonReduction]: Checked pairs total: 53489 [2023-11-19 08:03:33,459 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-11-19 08:03:33,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:33,482 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;@335255aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:33,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-19 08:03:33,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:03:33,487 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-19 08:03:33,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:33,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:33,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:03:33,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 08:03:33,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:33,494 INFO L85 PathProgramCache]: Analyzing trace with hash 31650610, now seen corresponding path program 1 times [2023-11-19 08:03:33,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:33,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891534529] [2023-11-19 08:03:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:33,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:33,851 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 08:03:33,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:33,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891534529] [2023-11-19 08:03:33,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891534529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:33,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:33,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:33,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810969760] [2023-11-19 08:03:33,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:33,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:33,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:33,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 471 [2023-11-19 08:03:33,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 99 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 08:03:33,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:33,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 471 [2023-11-19 08:03:33,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:35,479 INFO L124 PetriNetUnfolderBase]: 7342/12017 cut-off events. [2023-11-19 08:03:35,479 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-11-19 08:03:35,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23292 conditions, 12017 events. 7342/12017 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 82258 event pairs, 6283 based on Foata normal form. 1819/9498 useless extension candidates. Maximal degree in co-relation 22244. Up to 11134 conditions per place. [2023-11-19 08:03:35,633 INFO L140 encePairwiseOnDemand]: 443/471 looper letters, 77 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-19 08:03:35,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 360 flow [2023-11-19 08:03:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2023-11-19 08:03:35,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300778485491862 [2023-11-19 08:03:35,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2023-11-19 08:03:35,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2023-11-19 08:03:35,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:35,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2023-11-19 08:03:35,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states 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 08:03:35,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states 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 08:03:35,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states 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 08:03:35,676 INFO L175 Difference]: Start difference. First operand has 75 places, 99 transitions, 218 flow. Second operand 3 states and 749 transitions. [2023-11-19 08:03:35,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 360 flow [2023-11-19 08:03:35,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:03:35,687 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 174 flow [2023-11-19 08:03:35,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-11-19 08:03:35,693 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-11-19 08:03:35,693 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 174 flow [2023-11-19 08:03:35,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 08:03:35,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:35,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:03:35,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:35,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-19 08:03:35,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash 351497224, now seen corresponding path program 1 times [2023-11-19 08:03:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:35,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563875828] [2023-11-19 08:03:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:03:35,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:03:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:03:35,767 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:03:35,767 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:03:35,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-11-19 08:03:35,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2023-11-19 08:03:35,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2023-11-19 08:03:35,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2023-11-19 08:03:35,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2023-11-19 08:03:35,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2023-11-19 08:03:35,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2023-11-19 08:03:35,773 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2023-11-19 08:03:35,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2023-11-19 08:03:35,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2023-11-19 08:03:35,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2023-11-19 08:03:35,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2023-11-19 08:03:35,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2023-11-19 08:03:35,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2023-11-19 08:03:35,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2023-11-19 08:03:35,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2023-11-19 08:03:35,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2023-11-19 08:03:35,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2023-11-19 08:03:35,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2023-11-19 08:03:35,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2023-11-19 08:03:35,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2023-11-19 08:03:35,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2023-11-19 08:03:35,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2023-11-19 08:03:35,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2023-11-19 08:03:35,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2023-11-19 08:03:35,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2023-11-19 08:03:35,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:03:35,783 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:03:35,787 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:03:35,788 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:03:35,888 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 08:03:35,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 399 transitions, 842 flow [2023-11-19 08:03:36,452 INFO L124 PetriNetUnfolderBase]: 205/1386 cut-off events. [2023-11-19 08:03:36,452 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-11-19 08:03:36,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 1386 events. 205/1386 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8819 event pairs, 1 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 827. Up to 32 conditions per place. [2023-11-19 08:03:36,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 399 transitions, 842 flow [2023-11-19 08:03:36,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 399 transitions, 842 flow [2023-11-19 08:03:36,540 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:36,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 399 transitions, 842 flow [2023-11-19 08:03:36,547 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 399 transitions, 842 flow [2023-11-19 08:03:36,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 399 transitions, 842 flow [2023-11-19 08:03:37,005 INFO L124 PetriNetUnfolderBase]: 205/1386 cut-off events. [2023-11-19 08:03:37,005 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-11-19 08:03:37,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 1386 events. 205/1386 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8819 event pairs, 1 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 827. Up to 32 conditions per place. [2023-11-19 08:03:37,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 98000 [2023-11-19 08:03:43,790 INFO L134 LiptonReduction]: Checked pairs total: 212618 [2023-11-19 08:03:43,790 INFO L136 LiptonReduction]: Total number of compositions: 334 [2023-11-19 08:03:43,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:43,795 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;@335255aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:43,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-19 08:03:43,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:03:43,799 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-19 08:03:43,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:43,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:43,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:03:43,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-11-19 08:03:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1817244142, now seen corresponding path program 1 times [2023-11-19 08:03:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726635723] [2023-11-19 08:03:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,865 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 08:03:43,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:43,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726635723] [2023-11-19 08:03:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726635723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422584930] [2023-11-19 08:03:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:43,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 733 [2023-11-19 08:03:43,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 165 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 08:03:43,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:43,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 733 [2023-11-19 08:03:43,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand